Question

How does villi in the small intestine work? I'm aware of it's functions, but how exactly does it do it?

Answer 1

Explanation:

Digested nutrients pass into the blood vessels in the wall of the intestine through a process of diffusion. ... The function of the plicae circulares, the villi, and the microvilli is to increase the amount of surface area available for the absorption of nutrients.

Answer 2

Answer:

villi are finger like projections in the inner lining of small intestine. they have extensive network of blood capillaries. it increases the surface area for absorption of food.

explanation

Since the food is fully digested in small intestine, food is easily absorbed by blood capillaries there. As we know food is absorbed through the process of diffusion, to make it faster villi provides a larger surface area.