Question

The cells lining the small intestine have projections into the lumen of the intestine. These projections, combined with the highly folded layering of cells lining the lumen, function to ____

(A) decrease the reabsorption of water.
(B) slow the nerve impulses that trigger peristalsis.
(C) increase the surface area for nutrient absorption.
(D) facilitate countercurrent exchange.
(E) increase the rate of peristalsis.

Answer 1

C- Increases the surface area for nutrient absorption

Step-by-step explanation:

Intestines primary function is to absorb nutrients after they are digested in the stomach. It achieves this through its lumen that consist of epithelial cell lining of villi and crypts in the jejunum. They directly absorb nutrients and pass them to the capillaries where they are transported to other organs via the blood. These villi projections are best suited structures for absorption of nutrients because they increase surface area taking in as many carbohydrates, lipids and amino acids as they can.