Question

How is digested food assimilated and converted into energy

Answer 1

The digested food is taken up by the walls of the small intestine. The inner lining of the small intestine has numerous finger-like projections called villi which increase the surface area of absorption.The villi are richly supplied with blood vessels which take the absorbed food to each and every cell of the body, where it is utilized for obtaining energy, building up new tissues and the repair of old tissues.