Villi have a network of very fine blood capillaries . Give reason
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Villi have rich network of blood capillaries . Thus a steep concentration gradient is maintained between inside of small intestine and blood. ... Villi together with it's microvilli tremendously increase surface area of absorption. And hence supports effective absorption of nutrients into blood.
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The inner lining of the small intestine has numerous villi which increase the surface area for absorption. The villi are richly supplied with blood vessels which take the absorbed food to each and every cell of the body.
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