explain why villi is richly supplied blood vessels .its si unit
Answers
Answer:
The inner lining of the small intestine has numerous finger-like projections called villi which increase the surface area for absorption. The villi are richly supplied with blood vessels. They take the absorbed food to each and every cell of the body, where it is utilised for obtaining energy.
Explanation:
Dear, Villi are finger like projections present all along the small intestine wall internally and increases the surface area like pseudopodia do in amoeba for absorption of various food materials, ions, water etc and to absorb all these things it is richly supplied with blood vessels mainly the capillaries which absorb the food by the method of simple diffusion, facilitated diffusion and active transport according to the materials absorbed. so for this purpose villi richly supplied with blood vessels.
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