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anatomy.json
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anatomy
Topographic Anatomy Topographic anatomy applies to a body in the anatomic position.
Patient stands facing you, arms at side, palms forward.
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Imaginary straight lines that divide the body
Three main areas Coronal (frontal) plane: divides the body front/back Sagittal (lateral) plane: divides the body left/right Midsagittal (midline) plane: divides the body into equal left and right halves Transverse (axial) plane: divides the body top/bottom FIGURE 6-1 Anatomic planes of the body. © Jones & Bartlett Lear...
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Cells to Systems Cells: foundation of the human body
Tissues: cells that share a common function Organs: groups of tissues that perform similar or interrelated jobs Body systems: organs with similar function working together
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The Skeletal System: Anatomy The skeleton gives us our recognizable human form.
Composed of 206 bones Axial skeleton Appendicular skeleton Pelvis
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The Axial Skeleton Foundation to which the arms and legs are attached
Includes: Skull Facial bones Thoracic cage Vertebral column Skull Cranium: made up of 4 bones Face: made up of 14 bones FIGURE 6-6 The skull. A. Anterior view. B. Inferior view. © Jones & Bartlett Learning. Spinal column Composed of 33 bones (vertebrae) Divided into 5 sections: Cervical Thoracic Lumbar Sacrum Coccyx FI...
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Occur wherever bones come in contact
Consist of the ends of the bones and the connecting and supporting tissues Two types of joints: Ball-and-socket joint Allows rotation and bending Hinge joint Motion restricted to flexion and extension FIGURE 6-4 The shoulder is an example of a ball-and-socket joint. FIGURE 6-5 The elbow joints are hinge joints, which ...
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The Appendicular Skeleton Arms, legs, their connection points, and pelvis
Includes: Joints Upper extremities Pelvis Lower extremities
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Upper Extremities
Upper extremity extends from pectoral girdle to fingertips Composed of arms, forearms, hands, and fingers Shoulder girdle: three bones come together Clavicle Scapula Humerus FIGURE 6-9 The bones of the shoulder girdle include the clavicle and scapula. © Jones & Bartlett Learning. Arm Humerus is the supporting bone Fore...
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Wrist and hand
Ball-and-socket joint Principal bones Carpals Metacarpals Phalanges FIGURE 6-10 The major bones in the wrist and hand include the carpals, the metacarpals, and the phalanges. © Jones & Bartlett Learning.
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The Pelvis
The pelvic girdle consists of: Two coxae (hip bones) Sacrum Coccyx Each pelvic bone is formed by fusion of the ilium, ischium, and pubis.
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Posteriorly, the ilium, ischium, and pubis bones are joined by the sacrum.
Anteriorly, the pubic symphysis is where the right and left pubis are joined. FIGURE 6-11 The pelvis is a closed, bony ring that consists of the sacrum, ilium, ischium, pubis, acetabulum, and pubic symphysis. © Jones & Bartlett Learning.
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Lower Extremities
Femur Longest bone in body Connects into the acetabulum (pelvic girdle) by a ball-and-socket joint The greater and lesser trochanter are where the major muscles of the thigh connect to the femur. Knee connects the upper leg to the lower leg Kneecap (patella) Lower leg Tibia (shinbone) Anterior of leg Fibula Lateral sid...
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Foot
Contains 7 tarsal bones 5 metatarsal bones form substance of foot Toes are formed by phalanges FIGURE 6-13 A. The surface landmarks of the foot, including the talus, the calcaneus, and the phalanges. B. Soft tissue of the ankle. © Jones & Bartlett Learning.
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The Skeletal System: Physiology The skeletal system:
Gives the body its shape Protects fragile organs Allows for movement Stores calcium Helps create blood cells
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The Musculoskeletal System: Anatomy
Musculoskeletal system provides: Form Upright posture Movement Protection of vital internal organs FIGURE 6-15 The major muscle groups. © Jones & Bartlett Learning.
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Types of muscles:
Skeletal (voluntary) muscle Smooth muscle Cardiac muscle FIGURE 6-14 The three types of muscle are skeletal, smooth, and cardiac. © Jones & Bartlett Learning.
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The Musculoskeletal System: Physiology Contraction and relaxation of system make it possible to move and manipulate the environment.
A by-product of this movement is heat. Another function of the muscles is to protect the structures under them.
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The Respiratory System: Anatomy
The Respiratory System: Anatomy Structures of the body that contribute to respiration (the process of breathing) FIGURE 6-16 The respiratory system consists of all structures of the body that contribute to the process of breathing. © Jones & Bartlett Learning.
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Upper Airway
Includes: Nose Mouth (oral cavity) Tongue Jaw (mandible) Larynx Divides upper and lower airway Includes: (cont’d) Pharynx Nasopharynx Oropharynx Laryngopharynx Trachea Epiglottis
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Lower Airway Thyroid cartilage
Adam’s apple Cricoid cartilage: immediately below the thyroid cartilage Cricothyroid membrane Trachea Ends at carina, dividing into right and left bronchi leading to bronchioles
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The two lungs are held in place by:
Trachea Arteries and veins Pulmonary ligaments Divided into two lobes Right lung has upper, middle, and lower lobes Left lung has upper and lower lobes Within the lobes are bronchi, bronchioles, and alveoli. Allow for gas exchange Pleura: a layer of smooth, glistening tissue that covers each lung and lines the chest ca...
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Muscles of Breathing Diaphragm is the primary muscles of breathing.
Also involved are: Neck (cervical muscles) Intercostal muscles Abdominal muscles Pectoral muscles
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Inhalation Diaphragm and intercostal muscles contract
Pressure in the thoracic cavity decreases Lungs fill with air Active part of the respiratory cycle
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Exhalation Diaphragm and intercostal muscles relax
Thoracic cavity returns to it normal shape and volume Passive portion of the respiratory cycle
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The Respiratory System: Physiology
Function is to provide body with oxygen and eliminate carbon dioxide Ventilation and respiration are two separate, interdependent functions of the respiratory system. Respiration is the exchange of oxygen and carbon dioxide in the alveoli and tissues. Provides oxygen to the cells and removes waste carbon dioxide Diffus...
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Characteristics of Normal Breathing Normal rate and depth (tidal volume)
Regular rhythm or pattern of inhalation and exhalation Clear, audible breath sounds on both sides of chest Regular rise and fall movement on both sides of the chest Movement of the abdomen
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Inadequate Breathing Patterns in Adults Labored breathing
Muscle retractions Pale, cyanotic, cool, damp skin Tripod position Agonal gasps
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The Circulatory System: Anatomy
Complex arrangement of connected tubes Arteries, arterioles, capillaries, venules, and veins Two circuits Systemic circulation (body) Pulmonary circulation (lungs) FIGURE 6-25 The circulatory system includes the heart, arteries, veins, and interconnecting capillaries. The capillaries are the smallest vessels and connec...
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Hollow muscular organ
Made of specialized cardiac muscle Works as two paired pumps Each side is divided into: Atrium (upper chamber) Ventricle (lower chamber) Circulation The heart receives its blood from the aorta. Right side receives deoxygenated blood from the veins. Left side receives oxygenated blood from the lungs. FIGURE 6-27 A. The...
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Arteries carry blood from the heart to all body tissues.
Aorta branches into: Coronary arteries Carotid arteries Hepatic arteries Renal arteries Mesenteric arteries Pulmonary artery Carries oxygen-poor blood to the lungs Arteries branch into smaller arteries and then into arterioles. Arterioles branch into a series of increasingly smaller vessels until they connect to the c...
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Capillaries Connect arterioles to venules
Fine end divisions of arterial system Allow contact between blood and cells
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Veins Return oxygen-depleted blood to the heart
The superior vena cava carries blood returning from the head, neck, shoulders, and upper extremities. The inferior vena cava carries blood from the abdomen, pelvis, and lower extremities. Join at right atrium
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The Spleen Solid organ located under the rib cage
Filters blood Particularly susceptible to injury from blunt trauma
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Blood Composition Plasma (liquid)
Red blood cells (erythrocytes) White blood cells (leukocytes) Platelets
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The Circulatory System: Physiology
Blood pressure: pressure that blood exerts against the walls of arteries Systole: when the left ventricle of the heart contracts, it pumps blood from the ventricle into the aorta. Diastole: when the muscle of the ventricle relaxes, the ventricle fills with blood. Blood pressure readings Systolic blood pressure: high p...
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Normal Circulation in Adults Automatically adjusted and controlled
Perfusion: circulation of blood in organ or tissue in adequate amounts to meet the needs of cells Hypoperfusion: inadequate blood supply to organs, tissues, and cells
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Inadequate Circulation in Adults The system can adjust to small blood loss.
Vessels constrict. The heart pumps more rapidly. With a large loss, adjustment fails, and the patient goes into shock. Mean arterial pressure can help detect shock.
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Functions of Blood Fighting infection
Transporting oxygen Transporting carbon dioxide Controlling pH Transporting wastes and nutrients Clotting (coagulation)
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Nervous System Control of the Cardiovascular System
Sympathetic nervous system is responsible for fight-or-flight response. Sends commands to adrenal glands Epinephrine (adrenaline) and norepinephrine (noradrenaline) are secreted to stimulate heart and blood vessels. Blood vessels have alpha-adrenergic receptors. The heart and lungs have beta-adrenergic receptors. Baror...
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The Nervous System: Anatomy and Physiology The nervous system is perhaps the most complex organ in the body.
Divided into two main portions: Central nervous system (CNS) Peripheral nervous system
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Central Nervous System
Brain Controlling organ of the body Subdivisions Cerebrum Cerebellum Brainstem FIGURE 6-34 The brain lies well protected within the skull. Its major subdivisions are the cerebrum, the cerebellum, and the brainstem. © Jones & Bartlett Learning. Cerebrospinal fluid Cushions and protects the brain and spinal cord Circulat...
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Divided into two main portions:
Somatic nervous system Autonomic nervous system Somatic nervous system Transmits signals from brain to voluntary muscles Autonomic nervous system Involuntary actions Split into two areas Sympathetic nervous system (fight-or-flight) Parasympathetic nervous system (slows body) Two types of nerves within peripheral nervo...
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Two layers
Epidermis (superficial) Dermis (deeper) Subcutaneous tissue lies beneath the skin. Fat that insulates and serves as energy reservoir
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The Integumentary System
FIGURE 6-36 The layers of the skin can be divided between the epidermis and the dermis. Below the skin is a layer of subcutaneous tissue. © Jones & Bartlett Learning.
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The skin is the largest single organ in the body.
Three major functions Protects the body in the environment Regulates body temperature Transmits information from environment to brain The Integumentary System (Skin): Physiology
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Gastrointestinal system
Abdomen: the second major body cavity Contains major organs of digestion and excretion Organized into 4 quadrants: Right upper Lower upper Right lower Left lower
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The Digestive System: Anatomy
FIGURE 6-38 Several of the organs in the abdomen lie in more than one quadrant. © Jones & Bartlett Learning. Liver Bile ducts Small intestine Large intestine Appendix Rectum
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Mouth
Lips, cheeks, gums, teeth, tongue Salivary glands Oropharynx Esophagus Stomach Pancreas
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The Digestive System: Physiology Enzymes are added to food.
By salivary glands, stomach, liver, pancreas, and small intestine Food is converted into basic sugars, fatty acids, and amino acids. Further processed by liver Circulated via blood throughout body
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Elements of the lymphatic system:
Spleen Lymph nodes Lymph Lymph vessels Thymus gland Other components Supports the circulatory system and immune system Lymph is a thin, straw-colored fluid that carries oxygen and nutrients to cells and waste products away. Helps to rid the body of toxins and other harmful materials
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Complex message and control system
Integrates many body functions Hormones are released directly into the bloodstream. Epinephrine, norepinephrine, insulin
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The brain controls the release of hormones.
Excesses or deficiencies in hormones can cause disease. FIGURE 6-40 The endocrine system controls the production and release of hormones in the body. © Jones & Bartlett Learning.
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The Urinary System: Anatomy and Physiology
Controls the discharge of certain waste materials filtered from the blood by the kidneys Controls fluid balance in the body Filters and eliminates wastes Controls pH balance
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Kidneys
Ureter Urinary bladder FIGURE 6-42 The urinary system lies in the retroperitoneal (behind the peritoneum) space behind the organs of the digestive system. The urinary system in men and women includes the kidneys, ureters, bladder, and urethra. This diagram shows the male urinary system. © Jones & Bartlett Learning.
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The Genital System: Anatomy and Physiology
Controls reproductive processes Male system consists of: Testicles Epididymis Vasa deferentia Prostate gland Seminal vesicles Penis FIGURE 6-43 The male reproductive system consists of the testicles, epididymis, vasa deferentia, prostate gland, seminal vesicles, and penis. © Jones & Bartlett Learning. Female system con...
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Life Support Chain
All cells in body require oxygen, nutrients, and removal of waste. The circulatory system is the carrier of these supplies and wastes. If interference occurs, cells become damaged and die. Cells use oxygen to turn nutrients into chemical energy through metabolism. Aerobic metabolism uses oxygen. Cells switch to anaerob...
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Pathophysiology
The study of functional changes that occur when body reacts to disease Respiratory compromise is the inability of the body to move gas effectively. Hypoxia Hypercarbia Factors that impair ventilation Blocked airway Impairment of the muscles of breathing Airway obstructed physiologically (asthma) Other factors Factors ...
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Occurs when organs and tissue do not receive enough oxygen
Impaired oxygen delivery causes cellular hypoxia. Categorized into several types depending on the cause Effects of shock on the body The level of oxygen supplied to the tissues falls. Cells engage in anaerobic metabolism. Severe metabolic acidosis ensues. Baroreceptors initiate the release of epinephrine and norepineph...
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Impairment of Cellular Metabolism Results in the inability to properly use oxygen and glucose at the cellular level
Cells create energy through anaerobic metabolism. Can result in metabolic acidosis Brain cells cannot use alternative fuels. Cellular injury may become irreversible.
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ac
adrenal cortex
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acth
adrenocorticotropic hormone
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adh
antidiuretic hormone
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cah
congenital adrenal hyperplasia
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di
diabetes insipidus
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dka
diabetic ketoacidosis
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dm
diabetes mellitus
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fsh
follicle stimulating hormone
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gh
growth hormone
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hcg
human chorionic gonadotropin
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hgf
human growth factor
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icsh
interstitial cell stimulating hormone
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iddm
insulin dependent diabetes mellitus
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igt
impaired glucose tolerance
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jod
juvenile onset diabetes
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lf
luteinizing hormone
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mea
multiple endocrine adenomatosis
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men
multiple endocrine neoplasia
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msh
melanocyte-stimulating hormone
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niddm
noninsulin dependent diabetes mellitus
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oxt
oxytocin
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prl
prolactin
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pth
parathyroid hormone
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siadh
syndrome of inappropriate adh
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sth
somatotropic hormone
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t3
triiodothyronine
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t4
thyroxine
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tft
thyroid function test
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tsh
thyroid stimulating hormone
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ab
abortion
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afp
alpha fetoprotein
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arm
artificial rupture of membranes
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art
assisted reproductive technology
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bse
breast self examination
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bso
bilateral salpingo-oophorectomy
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bws
battered woman syndrome
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cs
cesarean section
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cvs
chorionic villus sampling
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cx
cervix
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d&c
dilation and curettage
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d&e
dilation and evacuation