AP BIOLOGY

Detailed explanation-1: -Millions of microscopic, finger-like projections called villi (VIH-lie) line the inside of the small intestine. The villi make lots of surface area for nutrients to get absorbed into the blood. Then blood brings the nutrients to the rest of the body.

Detailed explanation-2: -The structure of the small intestine is designed for absorption of nutrients. The inside of the small intestine is lined with villi that absorb nutrients from the liquid mixture called chyme produced in the stomach from the food we eat.

Detailed explanation-3: ->The main function of villi is to increase the surface area of the small intestine wall which helps in absorption of the digested food. This increased area for absorption is very useful as digested compounds like monosaccharide and amino acids pass into the semipermeable villi by diffusion.

Detailed explanation-4: -1. Villi That Line the Walls of the Small Intestine Absorb Nutrients. Villi that line the walls of the small intestine absorb nutrients into capillaries of the circulatory system and lacteals of the lymphatic system.

Detailed explanation-5: -Function of villi: Villi increase the surface area for absorption of nutrients by the small intestine.