What is the jejunum?
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It is called the jejunum. Gray's Anatomy (1918) describes it as the middle segment of the small intestine.
Summary
It is called the jejunum. Gray's Anatomy (1918) describes it as the middle segment of the small intestine.
What it is
- The middle segment of the small intestine.
- Has thicker walls and more prominent mucosal folds than the ileum.
- The main site of nutrient absorption.
Where it is
- Between the duodenum above and the ileum below.
- Occupies the upper left of the abdomen.
- About two-fifths of the small intestine below the duodenum.
Sources
According to Gray's Anatomy of the Human Body (1918, public domain):
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