which part of digestive canal is involved in following functions in humans? answer any two
(i) acid release
(ii) complete digestion of food
(iii)absorption of Water
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I)Stomach. The stomach contains HCl that acts on the food to remove harmful germs and provide an acidic medium for the pepsin enzyme to act upon.
ii) Small intestine. The small intestine is the place where complete digestion of food takes place.
iii) Large intestine. The water from the residue is absorbed by the walls of large intestine.
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ii) Small intestine. The small intestine is the place where complete digestion of food takes place.
iii) Large intestine. The water from the residue is absorbed by the walls of large intestine.
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a)The stomach is a J shaped organ.The stomach contains glands , which produce gastric juices,This gastric juice contains Hydrochloric acid, pepsin[enzyme] and mucus.
HCl makes the medium acidic , for the pepsin enzyme to act on the food and break down protein present in the food.HCl also kills microbes that my enter along with the food.Mucus protects the inner lining of stomach from the action of HCl.
b)Small intestine is the place where complete digestion of food takes place.The small intestine receives secretions from two glands: liver and pancreas
Liver secretes bile juice, stored in gall bladder.Bile is alkaline in nature , and contains bile salts which helps to emulsify or break the fats present in the food.Bile juice makes the acidic food alkaline so that the pancreatic enzymes can act on it , and also the bile salts breaks the large globules of fat into small globules .
Pancreas secretes pancreatic juice , which contains enzymes like trypsin [ protein digestion] , lipase [ fat digestion ] and pancreatic amylase [breaks down starch]
The walls of small intestine secretes intestinal juice.This juice contains enzymes which complete the digestion of complex carbohydrates into glucose, proteins into amino acids, and fats into fatty acids and glycerol.
The inner surface of small intestine contains small finger like projections called villi , which increases surface area for absorption , and is richly supplied with blood vessels.
c)Large intestine is the organ , where water is reabsorbed.
The water is reabsorbed by its walls
HCl makes the medium acidic , for the pepsin enzyme to act on the food and break down protein present in the food.HCl also kills microbes that my enter along with the food.Mucus protects the inner lining of stomach from the action of HCl.
b)Small intestine is the place where complete digestion of food takes place.The small intestine receives secretions from two glands: liver and pancreas
Liver secretes bile juice, stored in gall bladder.Bile is alkaline in nature , and contains bile salts which helps to emulsify or break the fats present in the food.Bile juice makes the acidic food alkaline so that the pancreatic enzymes can act on it , and also the bile salts breaks the large globules of fat into small globules .
Pancreas secretes pancreatic juice , which contains enzymes like trypsin [ protein digestion] , lipase [ fat digestion ] and pancreatic amylase [breaks down starch]
The walls of small intestine secretes intestinal juice.This juice contains enzymes which complete the digestion of complex carbohydrates into glucose, proteins into amino acids, and fats into fatty acids and glycerol.
The inner surface of small intestine contains small finger like projections called villi , which increases surface area for absorption , and is richly supplied with blood vessels.
c)Large intestine is the organ , where water is reabsorbed.
The water is reabsorbed by its walls
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