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Answer briefly :
(a) Why are villi present in the intestine and not in the stomach ?
(b) How does pepsinogen change into its active form ?
(c) What are the basic layers of the wall of alimentary canal?
(d) How does bile help in the digestion of fats?
(a) Why are villi present in the intestine and not in the stomach ?
(b) How does pepsinogen change into its active form ?
(c) What are the basic layers of the wall of alimentary canal?
(d) How does bile help in the digestion of fats?
Solution:
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Verified Answer
(a) Villi increases surface area for absorption and maximum absorption take place in intestine.
(b) Coming in contact with hydrochloric acid in stomach proenzyme pepsinogen convert to its active form pepsin, the proteolytic enzyme of stomach.
(c) There are four basic layers in the wall of alimentary canal i.e. serosa, muscularis, submucosa and mucosa.
(d) Bile helps in emulsification of fats i.e. breakdown the fats into very small micelles. Bile also activates lipases.
(b) Coming in contact with hydrochloric acid in stomach proenzyme pepsinogen convert to its active form pepsin, the proteolytic enzyme of stomach.
(c) There are four basic layers in the wall of alimentary canal i.e. serosa, muscularis, submucosa and mucosa.
(d) Bile helps in emulsification of fats i.e. breakdown the fats into very small micelles. Bile also activates lipases.
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