The anal sphincter regulates the exit of waste material from the body via the anus by controlling its opening and closing.

Unabsorbed food moves into the large intestine, where its walls absorb additional water from the material.

Absorbed nutrients are transported by blood vessels, which are abundantly present in the villi, to every cell of the body.

Villi increase the surface area of the inner lining of the small intestine, facilitating the absorption of digested food into the bloodstream.

Intestinal juice, secreted by glands in the walls of the small intestine, contains enzymes that further break down proteins into amino acids, complex carbohydrates into glucose, and fats into fatty acids and glycerol.