Question

explain the physical structure of small intestine ?

Answer 1

The small intestine or small bowel is the part of the gastrointestinal tract between the stomach and the large intestine, and is where most of the end absorption of food takes place. The small intestine has three distinct regions – the duodenum, jejunum, and ileum. The duodenum is the shortest part of the small intestine and is where preparation for absorption begins. It also receives bile and pancreatic juice through the pancreatic duct, controlled by the sphincter of Oddi. The primary function of the small intestine is the absorption of nutrients and minerals from food, using small finger-like protrusions called villi.
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Answer 2

Hey friend here is your answer

The small intestine is a long tube coiled together .it is an important part of human alimentary canal..
The small intestine is the site of complete digestion of food.it consists of deudonum jajulum and ileum .
It is covered with small finger like projections called villi increase the surface area of digested food.these have very thin walls and are richly supplied with blood vessels for easy exchange and absorption of water and useful substances.from this the waste moves to the large intestine where it is finally evicted through the anus..

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