Question

How is the small intestine designed to absorb digested food ​

Answer 1

Small intestine is long tubular structure. It's inner lining possesses numerous finger like projections called villi which increases surface area for the absorption of digested food.

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Answer 2

Answer;

small intestine designed to absorb digested food:

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The small intestine is the part of the intestines where 90% of the digestion and absorption of food occurs, the other 10% taking place in the stomach and large intestine. The main function of the small intestine is absorption of nutrients and minerals from food.The nutrients are absorbed by the inner walls of the small intestine into the blood stream. The nutrients are rendered small enough so that they may pass, or "be transported", across the epithelial cells of the gastrointestinal tract. The nutrients are absorbed by processes of simple/passive diffusion, facilitated diffusion, primary active transport, or secondary active transport.The small intestine is good for absorption since it has a large inner surface area. This is formed due to the plicae circulares which project many tiny finger-like structures of tissue called villi. These villi are richly supplied with blood vessels which take the absorbed food to each and every cell of the body, where it is used for obtaining energy, building up new tissues and repairing of old tissues.

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