Datasets:
karthikmns
/
eval_testing_mns

Dataset card Data Studio Files
xet
 Community
1
SC
stringlengths
1
129
⌀
Free distribution by T.S. Government 2019-20 13
We eat various types of food which has to pass through the same
digestive tract. It also has to be converted to substances small enough
to be utilised by our body. This needs various processess that can be
null
null
null
null
A
studied as follows.
Passage of food through alimentary canal or gut
null
null
null
null
AN
salivary duct
Food is cut and crushed by our teeth in the
mouth and mixed with saliva to make it wet and
slippery lump called bolus (This process is called
palate salivary
uvula as mastication). This bolus is suitable to pass
glands
tongue through oesophagus. Saliva is secreted by three pairs
null
null
null
null
NG
epiglottis of salivary glands. First pair is located at the side of
the jaw called as submandibular,
submandibular second pair is
fig-12: Buccal cavity located below the tongue called as sublingual and
third pair is located at the side of the ear called parotid glands. Saliva
mainly contains an enzyme amylase (ptyalin) which helps in the breakdown
LA
of complex carbohydrates to simple ones. This process of breaking down
of complex substances into simple substance with the help of enzymes
and obsorbed into the body is called digestion. The tongue helps in mixing
the food and pushing it into the next part. The lower jaw also helps in the
whole process.
TE
null
We can find out the effect of salivary amylase on carbohydrates to
observe what might be happening in our mouth.
p To know the chemical nature of the saliva perform the activity-
7 of co-ordination in life process of this text book.
The soft food mixed with saliva passes through oesophagus or food
T
null
null
pipe by wave like movements called peristaltic movement to the stomach.
At the stomach, food gets churned with gastric juice and HCl. Now
the food is in semisolid condition. The digestion of food goes on as most
ER
null
null
null
null
proteins are broken down into smaller molecules with the help of enzyme
pepsin acting on them.
peristaltic wave oesophagus Food in the form of a soft slimy substance where some
proteins and carbohydrates have already been broken down
SC
null
null
null
null
is called chyme. Now the food material passes from the
stomach stomach to the small intestine. Here the ring like muscles
called pyloric sphincters relax to open the passage into
the small intestine. The sphincters are responsible for
regulating the opening of the passage such that only small
bolus
quantities of the food material may be passed into the
fig-13: Peristaltic movement small intestine at a time.
14 X Class Nutrition - Food supplying system
The small intestine is the longest part of the alimentary canal. Its
proximal part is called duodenum. It is the site of further digestion of
carbohydrates, proteins and fats. It receives the secretion of liver and
null
null
null
null
A
pancreas for this purpose. These juices render the internal condition of the
intestine gradually to a basic or alkaline one.
null
null
null
null
AN
Fats are digested by converting them into small globule like forms by the
help of the bile juice secreted from liver. This process is called emulsification.
Pancreatic juice secreted from pancreas contains enzymes like trypsin
for carrying on the process of digestion of proteins and lipase for fats.
Walls of the small intestine secrete intestinal juice called
null
null
null