What do you mean by absorption of food? Explain.

Explanation

Absorption is the process by which the products of the digestion are taken into the blood stream. Ileum is the portion where most of absorption take place. Villi makes the process of absorption more effective providing the larger surface area. The digested food present in the intestinal lumen passes over villi and the nutrients diffuse through the epithelial cells and finally enter the blood stream in the blood vessels. Fatty acids and glycerol are absorbed by lacteals and finally reach the blood stream.