Question

Write the function of the following:
(a) Villi in small intestine
(b) Salivary amylase.
(c) Bile juice

Answer 1

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(i) Villi in small intestine: These structures present in the small intestine, they help in absorbing digested food, these structures look like small fingers.

(ii) Salivary amylase: Watery substance, which produced in the mouth. It contains electrolytes, mucus antibacterial compounds and enzyme.

(iii) Bile juice: It is a dark green yellowish-brown fluid produced by the liver.

Answer 2

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• i) Saliva contains a digestive enzyme called salivary amylase which breaks down starch into sugar.
• (ii)Secrtion of HCl makes the food soft and acidified for pepsin to act unpon food. ...
• (ii)Secrtion of HCl makes the food soft and acidified for pepsin to act unpon food. ... (iv) Villi in the small intestine inceare the surface area of the absorption of food .