The absorptive effectiveness of the small intestine is enhanced by increasing the surface area of the mucosal lining.Which of the following accomplish this task?

Question

Quizplus · Accepted Answer

Plicae circulares and intestinal villi are folds and finger-like projections of the mucosal lining of the small intestine that increase the surface area available for absorption. Brunner's glands secrete mucus in the duodenum to protect the small intestine from stomach acid and enzymes, but do not directly increase surface area. Rugae are folds in the stomach lining, not the small intestine. Digestive enzymes also do not directly increase surface area.

The Absorptive Effectiveness of the Small Intestine Is Enhanced by Increasing