Name: Digestive System in Humans
Uploaded: 2019-07-19
Duration: 9 min 13 s
Description: The human digestive system consists of the gastrointestinal tract plus the accessory organs. Digestion involves the absorption and assimilation of food.

Question

What happens after food reaches small intestine?

Accepted Answer

The small intestine is the longest part of the digestive system. It is about 7.5 meters long and extends from the stomach to the large intestine and consists of three parts: duodenum, jejunum, and ileum. The primary function of the small intestine is the absorption of nutrients and minerals found in food. Villi are small finger-like projections found inside the inner walls of the small intestine. They are tiny, finger-like projections made up of cells that line the entire length of the small intestine. Each villus has a network of thin and small blood vessels called capillaries. They increase the surface area for absorption of the digested food. The food that remains undigested and unabsorbed passes from small intestine into the large intestine, which is wider and shorter than the small intestine.

What happens after food reaches small intestine?

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