Epithelial cells are continually being shed from the villi because
A) the intracellular enzymes digest important cellular constituents, causing the cells to disintegrate and slough.
B) the body needs a continual supply of protein derived from the digestion of these cells.
C) new cells are continually being produced in the crypts at the base of the villi and migrate upward.
D) acid entering the small intestine from the stomach constantly destroys the small intestinal lining, causing the cells to slough.
E) none of these answers.

Question

Quizplus · Accepted Answer

The epithelial cells of the villi are continually being shed and replaced by new cells that are produced in the crypts at the base of the villi. This turnover is a normal process of the small intestine, and it ensures that the villi are continually replenished with healthy, functioning cells.

Epithelial Cells Are Continually Being Shed from the Villi Because