How is the small intestine designed to absorb digested food?

Explanation

The small intestine has millions of tiny finger-like projections called villi, which increase the surface area for the absorption of digested food. These villi are highly vascularised, that is, many blood vessels are present that absorb the digested food and carry it to the blood stream. From the blood stream, the absorbed food is delivered to each and every cell of the body, where it is utilised for obtaining energy, building up new tissues and repair of old tissues.