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see if you can evaluate this integral right over here . assuming you had a goal at it so let 's work through this together . you probably realized that some of the traditional techniques that we 've already had in our tool kits do n't seem to be directly applicable , u-substitution and others . the key here to realize... | what are we going to have then ? we divide the numerator by negative two . if this is negative four , this is going to become positive two . | how do you decide which expression to divide into which ? |
see if you can evaluate this integral right over here . assuming you had a goal at it so let 's work through this together . you probably realized that some of the traditional techniques that we 've already had in our tool kits do n't seem to be directly applicable , u-substitution and others . the key here to realize... | our original integral has simplified to negative 1/2 , and some might argue it 's not simplified but it 's actually much more useful for finding the integral . negative 1/2 plus two over x minus one , d x . now , how do we evaluate this ? | how to proof 1/square root of x square minus a square by completing square method ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | so that 's why they 're very special and i want you to remember them . from there , blood is going to go through the capillaries . i did n't actually label them the first time , but let me just write that here . | are the arterioles connected to the venules with the capillaries ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | and this process is called vasoconstriction . vaso just means blood vessel . and constriction is kind of tightening down . | i 'm unclear whether when we go from the oxygenated blood to the toe cells to the de-oxygenated ones in the veins , is that still one connected vessel ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | so the arterial system we know is a high-pressure system . so this makes perfect sense that the first few arteries , those large arteries and even those medium-sized arteries , are going to be able to deal with the pressure really well . now , let me draw a little line here just to keep it straight . | how can the volume of veins be so much larger than the volume of arteries ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | so one important thing here is the valves . and remember , the other important thing is that they are able to deal with large volumes . so unlike the arterial side where it was all about large pressure , down here with the vein side , we have to think about large volumes . remember about 2/3 of your blood at any point ... | the aorta is the large artery exiting the left ventricle , does some large vein enter the right ventricle ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | now , let me draw a little line here just to keep it straight . the small artery and the arteriole , these two are actually sometimes called the muscular arteries . and the reason , again , if you just want to look at the wall of the artery , you 'll get the answer . | when does an artery turn into an arteriole , and likewise for veins and venules ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | they 're tightly wound , so you 're going to create like a little straw . and this process is called vasoconstriction . vaso just means blood vessel . | -- what is the purpose of vasoconstriction ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | and these veins are all going to dump into an enormous vein that we call the inferior vena cava . i 'll write that right here , inferior vena cava . and this is the large vein that brings back all the blood from the bottom half of the body . | 5 , how is the inferior venacava inferior when it is so big ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | these are my toes cells . and after the toe cells have kind of taken out whatever they need -- maybe they need glucose or maybe they need some oxygen . whatever they 've taken out , they 're also going to put in their waste . | - are the valves in the veins tethered to the walls ; or do they not need to be because of the low pressure ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | i did n't actually label them the first time , but let me just write that here . some , as they call them , capillary beds . i 'll write that out . | what exactly is a capillary ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | they 're tightly wound , so you 're going to create like a little straw . and this process is called vasoconstriction . vaso just means blood vessel . | what are the valves in your veins called ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | and , of course , there 's energy in that blood . that pressure energy has been converted over into elastic energy . it 's actually converting energy . | how does the arteries convert pressure energy to elastic energy ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | and , of course , there 's energy in that blood . that pressure energy has been converted over into elastic energy . it 's actually converting energy . | what is elastic and pressure energy ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | and that 's probably the easiest way to think about it . if you have a blood vessel , one of these large arteries , for example , and let 's say blood is under a lot of pressure because the heart is squeezing out a lot of high pressure blood , this artery is literally going to balloon out . and if you actually looked a... | if the blood pressure in the veins is small compared to the blood pressure in the arteries , why does n't the deoxygenated blood from the lower half of your body stay there because of gravity ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | the wall of the artery is actually very muscular . in fact , specifically , it 's smooth muscle . so not the kind of muscle you have in your heart or in your biceps , but this is smooth muscle that 's in the wall of the artery . | what is a smooth muscle ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | they 're tightly wound , so you 're going to create like a little straw . and this process is called vasoconstriction . vaso just means blood vessel . | what are some examples of instances that vasodilatation or vasoconstriction would be necessary ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | i did n't actually label them the first time , but let me just write that here . some , as they call them , capillary beds . i 'll write that out . | does every cell in our bodies touch a capillary ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | and the reason they 're called elastic arteries , one of the good reasons why they 're called that is that they have a protein in the walls of the blood vessel called elastin . they have a lot of this elastin protein . and if you think about the word elastin or elastic -- obviously very similar words -- you might think... | can someone please explain to me what elastin does ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | and when you convert from pressure energy to elastic energy , what you 're really then doing is you 're balancing out those high pressures . so you 're balancing out high pressures . and this is actually very important , because the blood that 's coming into our arteries is under , let 's not forget , high pressure . s... | why is it important to have a high resistance by vasoconstriction in the small arteries and arterioles ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | and generally speaking , these are all considered , of course , veins . let 's back up now and start with the large and medium arteries . these guys together are sometimes referred to as elastic arteries . | would my finger start decaying ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | and constriction is kind of tightening down . so vasoconstriction , tightening down of the blood vessel . and what that does is it increases resistance . | the veins are low pressure vessels , where does the blood speed slows down before getting to the veins , , , and secondly what is the purpose of vasoconstriction ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | and the important thing about the veins -- i 'm going to stop right here and just talk about it very briefly -- is that they have these little valves . and these valves make sure that the blood continues to flow in one direction . so one important thing here is the valves . | whats the blood flow from the right subclavian vein to left axillary artery ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | i did n't actually label them the first time , but let me just write that here . some , as they call them , capillary beds . i 'll write that out . | so are capillary beds just formed by arteries or are the made up of veins as well ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | they 're tightly wound , so you 're going to create like a little straw . and this process is called vasoconstriction . vaso just means blood vessel . | did rishi explain why the arterioles go through vasoconstriction ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | well , it 's the same idea here . and actually , a lot of that resistance and change in the vasoconstriction is happening at the arteriole level . so that 's why they 're very special and i want you to remember them . | what is the purpose of increasing resistance at the arteriole level ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the largest artery of the body . | the veins carry such a large volume so we can see them on our arms due to their size , right ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | that pressure energy has been converted over into elastic energy . it 's actually converting energy . we do n't really always think about it that way , but that 's exactly what 's happening . | do the arterioles and venules actually meet ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | i did n't actually label them the first time , but let me just write that here . some , as they call them , capillary beds . i 'll write that out . | the capillaries are introduced but never really expanded upon , so what is a capillary ( or capillary bed ) and what is its function ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | let 's back up now and start with the large and medium arteries . these guys together are sometimes referred to as elastic arteries . and the reason they 're called elastic arteries , one of the good reasons why they 're called that is that they have a protein in the walls of the blood vessel called elastin . | is the elastic arteries what causes this ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | and this process is called vasoconstriction . vaso just means blood vessel . and constriction is kind of tightening down . | so does that mean that donated blood has to be re-oxygenated ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | and this process is called vasoconstriction . vaso just means blood vessel . and constriction is kind of tightening down . | would performing a blood transfusion with de-oxygenated blood help at all ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | let 's draw four just for fun . and this is actually going to now get towards my little toe cells . so let me draw some toes cells in here to convince you that i actually have gotten there . | so how do the oxygen , nutrients , etc actually get to the non-blood cells ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | and this process is called vasoconstriction . vaso just means blood vessel . and constriction is kind of tightening down . | why when you bleed is your blood always red , do n't you also cut veins ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | if you have a blood vessel , one of these large arteries , for example , and let 's say blood is under a lot of pressure because the heart is squeezing out a lot of high pressure blood , this artery is literally going to balloon out . and if you actually looked at it from the outside , it would look like a little sausa... | why my veins looks like filled when below the level of the heart ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | so these two veins , the superior vena cava and the inferior vena cava , are dragging the blood back to the heart . and generally speaking , these are all considered , of course , veins . let 's back up now and start with the large and medium arteries . | i understand that arteries can constrict by tightening the smooth muscles but how do veins shrink in size for example in veins of long term drug addicts ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | they 're tightly wound , so you 're going to create like a little straw . and this process is called vasoconstriction . vaso just means blood vessel . | what would be the cause of vasoconstriction ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | this is now going to dump into what we call a venule . and this venule is going to basically then feed into many , many other venules . maybe there 's a venule down here coming in , and maybe a venule up here coming in maybe from the second toe . | how many valves are there ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | and this process is called vasoconstriction . vaso just means blood vessel . and constriction is kind of tightening down . | when we talk about `` vasocontriction '' ... i understand we infer all blood vessels but since arterioles have the most resistance does vasocontriction primarily infer constriction of the arterioles ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | and constriction is kind of tightening down . so vasoconstriction , tightening down of the blood vessel . and what that does is it increases resistance . | for example , when we say there is vasoconstriction due to decreased blood volume ... will that infer that the arterioles are constricted to increase tpr and this does not really affect the veins and the arteries ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | there 's also another one over here called the superior vena cava , and this is bringing back blood from the arms and head . so these two veins , the superior vena cava and the inferior vena cava , are dragging the blood back to the heart . and generally speaking , these are all considered , of course , veins . | why are there two veins that are connected to the heart ( superior and inferior vena cava ) , but only one artery ( aorta ) ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | so that 's why they 're very special and i want you to remember them . from there , blood is going to go through the capillaries . i did n't actually label them the first time , but let me just write that here . | what is the colour of the blood in capillaries ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | so the arterial system we know is a high-pressure system . so this makes perfect sense that the first few arteries , those large arteries and even those medium-sized arteries , are going to be able to deal with the pressure really well . now , let me draw a little line here just to keep it straight . | in arteries its bright red and in veins , dark red , so what about capillaries ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | so the arterial system we know is a high-pressure system . so this makes perfect sense that the first few arteries , those large arteries and even those medium-sized arteries , are going to be able to deal with the pressure really well . now , let me draw a little line here just to keep it straight . | how do the arteries expand ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | so the arterial system we know is a high-pressure system . so this makes perfect sense that the first few arteries , those large arteries and even those medium-sized arteries , are going to be able to deal with the pressure really well . now , let me draw a little line here just to keep it straight . | the arteries are connected to the arterioles , venules , and veins , right ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | let 's say this one goes towards my foot , and this is going to be now an even smaller artery . let 's call it small artery . from there , we 're actually going to get into what we call arterioles , so it 's going to get even tinier . | why is an artery accompanied by a vein that has the same name ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | and the important thing about the veins -- i 'm going to stop right here and just talk about it very briefly -- is that they have these little valves . and these valves make sure that the blood continues to flow in one direction . so one important thing here is the valves . | do the valves in veins also prevent back flow ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | so the arterial system we know is a high-pressure system . so this makes perfect sense that the first few arteries , those large arteries and even those medium-sized arteries , are going to be able to deal with the pressure really well . now , let me draw a little line here just to keep it straight . | where do muscular arteries spread ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | so the arterial system we know is a high-pressure system . so this makes perfect sense that the first few arteries , those large arteries and even those medium-sized arteries , are going to be able to deal with the pressure really well . now , let me draw a little line here just to keep it straight . | when we feel cold , our vessels will constrict themselves to save heat .are muscular arteries relate to this mechanism ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | and this process is called vasoconstriction . vaso just means blood vessel . and constriction is kind of tightening down . | are the capilaries a mix of oxygenated and de-oxygenated blood ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | now , these are very , very tiny branches coming off my small artery . and let 's follow this one right here , and this one is my arteriole . so these are all the different branches i have to go through . | because i suppose that the arterioles/capillaries have to feed more than one cel per arteriole , right ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | let 's draw four just for fun . and this is actually going to now get towards my little toe cells . so let me draw some toes cells in here to convince you that i actually have gotten there . | so i the capillary reach cell one , .. it has gives some oxygen to the cell , and absorbs the waste of that cell , going further doing the same with the next cells ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | and this process is called vasoconstriction . vaso just means blood vessel . and constriction is kind of tightening down . | are the capilaries a mix of oxygenated and de-oxygenated blood ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | now , these are very , very tiny branches coming off my small artery . and let 's follow this one right here , and this one is my arteriole . so these are all the different branches i have to go through . | because i suppose that the arterioles/capillaries have to feed more than one cel per arteriole , right ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | let 's draw four just for fun . and this is actually going to now get towards my little toe cells . so let me draw some toes cells in here to convince you that i actually have gotten there . | so i the capillary reach cell one , .. it has gives some oxygen to the cell , and absorbs the waste of that cell , going further doing the same with the next cells ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | and this process is called vasoconstriction . vaso just means blood vessel . and constriction is kind of tightening down . | are the capilaries a mix of oxygenated and de-oxygenated blood ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | now , these are very , very tiny branches coming off my small artery . and let 's follow this one right here , and this one is my arteriole . so these are all the different branches i have to go through . | because i suppose that the arterioles/capillaries have to feed more than one cel per arteriole , right ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | let 's draw four just for fun . and this is actually going to now get towards my little toe cells . so let me draw some toes cells in here to convince you that i actually have gotten there . | so i the capillary reach cell one , .. it has gives some oxygen to the cell , and absorbs the waste of that cell , going further doing the same with the next cells ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | and this process is called vasoconstriction . vaso just means blood vessel . and constriction is kind of tightening down . | are the capilaries a mix of oxygenated and de-oxygenated blood ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | now , these are very , very tiny branches coming off my small artery . and let 's follow this one right here , and this one is my arteriole . so these are all the different branches i have to go through . | because i suppose that the arterioles/capillaries have to feed more than one cel per arteriole , right ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | let 's draw four just for fun . and this is actually going to now get towards my little toe cells . so let me draw some toes cells in here to convince you that i actually have gotten there . | so i the capillary reach cell one , .. it has gives some oxygen to the cell , and absorbs the waste of that cell , going further doing the same with the next cells ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | and this process is called vasoconstriction . vaso just means blood vessel . and constriction is kind of tightening down . | are the capilaries a mix of oxygenated and de-oxygenated blood ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | now , these are very , very tiny branches coming off my small artery . and let 's follow this one right here , and this one is my arteriole . so these are all the different branches i have to go through . | because i suppose that the arterioles/capillaries have to feed more than one cel per arteriole , right ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | let 's draw four just for fun . and this is actually going to now get towards my little toe cells . so let me draw some toes cells in here to convince you that i actually have gotten there . | so i the capillary reach cell one , .. it has gives some oxygen to the cell , and absorbs the waste of that cell , going further doing the same with the next cells ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | and this process is called vasoconstriction . vaso just means blood vessel . and constriction is kind of tightening down . | are the capilaries a mix of oxygenated and de-oxygenated blood ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | now , these are very , very tiny branches coming off my small artery . and let 's follow this one right here , and this one is my arteriole . so these are all the different branches i have to go through . | because i suppose that the arterioles/capillaries have to feed more than one cel per arteriole , right ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | let 's draw four just for fun . and this is actually going to now get towards my little toe cells . so let me draw some toes cells in here to convince you that i actually have gotten there . | so i the capillary reach cell one , .. it has gives some oxygen to the cell , and absorbs the waste of that cell , going further doing the same with the next cells ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | there 's also another one over here called the superior vena cava , and this is bringing back blood from the arms and head . so these two veins , the superior vena cava and the inferior vena cava , are dragging the blood back to the heart . and generally speaking , these are all considered , of course , veins . | are there still red bloodcells in the veins containing oxygen that is not delivered to any cell when it gets back to the heart again ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | there 's also another one over here called the superior vena cava , and this is bringing back blood from the arms and head . so these two veins , the superior vena cava and the inferior vena cava , are dragging the blood back to the heart . and generally speaking , these are all considered , of course , veins . | are there still red bloodcells in the veins containing oxygen that is not delivered to any cell when it gets back to the heart again ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | there 's also another one over here called the superior vena cava , and this is bringing back blood from the arms and head . so these two veins , the superior vena cava and the inferior vena cava , are dragging the blood back to the heart . and generally speaking , these are all considered , of course , veins . | are there still red bloodcells in the veins containing oxygen that is not delivered to any cell when it gets back to the heart again ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | there 's also another one over here called the superior vena cava , and this is bringing back blood from the arms and head . so these two veins , the superior vena cava and the inferior vena cava , are dragging the blood back to the heart . and generally speaking , these are all considered , of course , veins . | are there still red bloodcells in the veins containing oxygen that is not delivered to any cell when it gets back to the heart again ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | there 's also another one over here called the superior vena cava , and this is bringing back blood from the arms and head . so these two veins , the superior vena cava and the inferior vena cava , are dragging the blood back to the heart . and generally speaking , these are all considered , of course , veins . | are there still red bloodcells in the veins containing oxygen that is not delivered to any cell when it gets back to the heart again ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | there 's also another one over here called the superior vena cava , and this is bringing back blood from the arms and head . so these two veins , the superior vena cava and the inferior vena cava , are dragging the blood back to the heart . and generally speaking , these are all considered , of course , veins . | are there still red bloodcells in the veins containing oxygen that is not delivered to any cell when it gets back to the heart again ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | so vasoconstriction , tightening down of the blood vessel . and what that does is it increases resistance . just like if you 're trying to blow through a tiny , tiny little straw , there 's a lot of resistance . | what is the purpose for increasing resistance ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | well , it 's the same idea here . and actually , a lot of that resistance and change in the vasoconstriction is happening at the arteriole level . so that 's why they 're very special and i want you to remember them . | what is the purpose of vasoconstriction and therefore increasing of resistance of arterioles ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | and that 's probably the easiest way to think about it . if you have a blood vessel , one of these large arteries , for example , and let 's say blood is under a lot of pressure because the heart is squeezing out a lot of high pressure blood , this artery is literally going to balloon out . and if you actually looked a... | does is also create a higher blood pressure in the arteries in front of the arterioles of in the arterioles themselves ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | these are my toes cells . and after the toe cells have kind of taken out whatever they need -- maybe they need glucose or maybe they need some oxygen . whatever they 've taken out , they 're also going to put in their waste . | why do we need resistance for muscular arteries ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | and this process is called vasoconstriction . vaso just means blood vessel . and constriction is kind of tightening down . | why does systemic circulation has 80=85 % of total volume of blood ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | so the arterial system we know is a high-pressure system . so this makes perfect sense that the first few arteries , those large arteries and even those medium-sized arteries , are going to be able to deal with the pressure really well . now , let me draw a little line here just to keep it straight . | why do we have muscular arteries ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | and that 's probably the easiest way to think about it . if you have a blood vessel , one of these large arteries , for example , and let 's say blood is under a lot of pressure because the heart is squeezing out a lot of high pressure blood , this artery is literally going to balloon out . and if you actually looked a... | is this mean that elastin protein are destroyed when people lose their elasticity in artery due to high blood pressure ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | and that 's why i say it 's a large artery . and from the aorta -- i 'm actually not drawing all the branches of the aorta . but from the aorta , it 's going to go down into my belly . | does n't the aorta come out of the right side of the heart ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | so the arterial system we know is a high-pressure system . so this makes perfect sense that the first few arteries , those large arteries and even those medium-sized arteries , are going to be able to deal with the pressure really well . now , let me draw a little line here just to keep it straight . | do you bleed faster from your veins or arteries ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | but from the aorta , it 's going to go down into my belly . and it 's going to branch towards my left leg and my right leg . so let 's say we follow just the left leg . | how would you trace a drop of blood from the left kidney to the right kidney ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | and it 's going to basically all kind of gather together , and again , to a giant , giant set of veins . maybe veins are dumping in here now , maybe another vein dumping in here . and these veins are all going to dump into an enormous vein that we call the inferior vena cava . i 'll write that right here , inferior ven... | what is varicose vein and how do they occur ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | and that 's why i say it 's a large artery . and from the aorta -- i 'm actually not drawing all the branches of the aorta . but from the aorta , it 's going to go down into my belly . | is the aorta on the right side ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | and then there are , of course , little branches . and let 's just follow the branch that goes towards my foot , which is this top one . let 's say this one goes towards my foot , and this is going to be now an even smaller artery . | when rishi draws the foot in this video , does it look a a hand ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | and the important thing about the veins -- i 'm going to stop right here and just talk about it very briefly -- is that they have these little valves . and these valves make sure that the blood continues to flow in one direction . so one important thing here is the valves . | does n't the resistance actually hinder blood flow and how would that be helpful ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | the wall of the artery is actually very muscular . in fact , specifically , it 's smooth muscle . so not the kind of muscle you have in your heart or in your biceps , but this is smooth muscle that 's in the wall of the artery . | big arteries are not composed of smooth muscle , so they do not constrict and dilate ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | so the arterial system we know is a high-pressure system . so this makes perfect sense that the first few arteries , those large arteries and even those medium-sized arteries , are going to be able to deal with the pressure really well . now , let me draw a little line here just to keep it straight . | so [ medications that ] vasoconstrictors and vasodilators do not affect those big arteries ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | i did n't actually label them the first time , but let me just write that here . some , as they call them , capillary beds . i 'll write that out . | capillary vs. arteriole & venules : at what point are arteriole and venules considered a capillary , or capillary bed ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | and , of course , there 's energy in that blood . that pressure energy has been converted over into elastic energy . it 's actually converting energy . | base on laplace 's law , please explain for me if pressure and afterload mean the same ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | so these two veins , the superior vena cava and the inferior vena cava , are dragging the blood back to the heart . and generally speaking , these are all considered , of course , veins . let 's back up now and start with the large and medium arteries . | so if there are valves in the veins of the systemic circulations , is this the same for the veins in the pulmonary circulations ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | and this process is called vasoconstriction . vaso just means blood vessel . and constriction is kind of tightening down . | are capillaries any blood vessel that is small , and contains blood right next to the individual cells , or are capillaries only vessels that deliver blood to the cells ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | so the arterial system we know is a high-pressure system . so this makes perfect sense that the first few arteries , those large arteries and even those medium-sized arteries , are going to be able to deal with the pressure really well . now , let me draw a little line here just to keep it straight . | in other words , can capillaries be veins and arteries , or just arteries ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | and the important thing about the veins -- i 'm going to stop right here and just talk about it very briefly -- is that they have these little valves . and these valves make sure that the blood continues to flow in one direction . so one important thing here is the valves . and remember , the other important thing is t... | what makes valves know when to open and shut themselves ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | so that 's why they 're very special and i want you to remember them . from there , blood is going to go through the capillaries . i did n't actually label them the first time , but let me just write that here . | how do you determine the diameter of arterioles , veins and capillaries and their cross sectional area given the dimensions of a red blood cell ( 10 micrometers length , 10 micrometers wide , 5 micrometers thick ) ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | so the arterial system we know is a high-pressure system . so this makes perfect sense that the first few arteries , those large arteries and even those medium-sized arteries , are going to be able to deal with the pressure really well . now , let me draw a little line here just to keep it straight . | do all of the arteries branch off of the aorta ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | and , of course , there 's energy in that blood . that pressure energy has been converted over into elastic energy . it 's actually converting energy . | could the changing of the energy in the arteries also be known as the hydrostatic pressure ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | this is now going to dump into what we call a venule . and this venule is going to basically then feed into many , many other venules . maybe there 's a venule down here coming in , and maybe a venule up here coming in maybe from the second toe . | for a normal person if all the 9 veins were blocked , and undergo with bypass surgery how many percent is the survival rate ? |
i want to figure out how blood gets from my heart , which i 'm going to draw here , all the way to my toe . and i 'm going to draw my foot over here and show you which toe i 'm talking about . let 's say this toe right here . now , to start the journey , it 's going to have to go out of the left ventricle and into the ... | so the arterial system we know is a high-pressure system . so this makes perfect sense that the first few arteries , those large arteries and even those medium-sized arteries , are going to be able to deal with the pressure really well . now , let me draw a little line here just to keep it straight . | are veins actually that much bigger than arteries ? |
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