Absorptive effectiveness of the small intestine is enhanced by
A) plicae.
B) villi.
C) microvilli.
D) intestinal movements.
E) all of the above

Question

Quizplus · Accepted Answer

Absorptive effectiveness of the small intestine is enhanced by all the given options: plicae, villi, microvilli, and intestinal movements. Plicae are circular folds on the inner lining of the small intestine that increase the surface area available for absorption. Villi are finger-like projections on the plicae that further increase the surface area for absorption. Microvilli are tiny, hair-like projections on the surface of the absorptive cells that increase the surface area even further. Intestinal movements help to mix the chyme and bring it into contact with the absorptive surfaces of the small intestine, maximizing nutrient absorption.

Absorptive Effectiveness of the Small Intestine Is Enhanced by