The Small Intestine

What does it do?

The small intestine is about twenty feet long. It connects your stomach to your large intestine (or colon) and folds many times to fit inside your abdomen. Your small intestine does most of the digesting of the foods you eat. The small intestine absorbs the nutrients form your food.

Where is it located?

The small intestine is located between the stomach and large intestine.

What size?

In humans the small intestine is about 6 meters or 20 feet long and about 2.5 cm or an inch wide.

What does it do?

The small intestine is made up of three sections, which form a passage from your stomach to your large intestine:

The duodenum is the short section part of the small intestine that takes in semi-digested food from your stomach through the pylorus (the opening between your stomach and small intestine) and continues the digestion process. The duodenum also uses bile from your gallbladder, liver, and pancreas to help digest food.

Jejunum is the middle section part of the small intestine that carries food through rapidly, with muscle contractions, towards the ileum.

Ileum is the last section and longest part of your small intestine. The ileum is where most of the nutrients from your food are absorbed before going into the large intestine.

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