Question

what is hcl and villi write the function​

Answer 1

HCl is hydrochloric acid, which is present in our stomach, and helps us to digest the food we eat

Villi is the plural form of Villus, which is present in the small intestine to absorb the nutrients present in the food.

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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. ... (iv) Villi in the small intestine inceare the surface area of the absorption of food .