Epithelial Cells Are Continually Being Shed from the Intestinal Villi

question 138

Multiple Choice

Epithelial cells are continually being shed from the intestinal villi because

• A)the intracellular enzymes cause the cells to disintegrate and slough off
• B)the body needs a continual supply of protein derived from the digestion of these cells
• C)new cells are produced continually in the crypts and then they migrate upward
• D)acid entering the small intestine constantly destroys the villi, causing the cells to slough
• E)of factors other than those mentioned above

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