HISTOLOGY
DIGESTIVE SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What is the function of the villi?
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To increase the absorption surface
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To digest the last nutrients
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To form feces
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To comb the small intestine
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Explanation:
Detailed explanation-1: -On the surface of each columnar cell there are about 600 very fine projections called microvilli that further increase the absorptive area of each villus. Villi of the intestine move in swaying, contracting motions. These movements are believed to increase the flow of blood and lymph and to enhance absorption.
Detailed explanation-2: -The small intestine has millions of tiny finger-like projections called villi. These villi increase the surface area for more efficient food absorption. Within these villi, are present numerous blood vessels that absorb the digested food and carry it to the bloodstream.
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