(jē-jū′nŭm)
[Pronunciation]
[L., empty]
The second part of the small intestine.
It grades imperceptibly into the ileum, the final part of the small intestine. The jejunum has a wider diameter (avg. 3 cm) and larger, taller, and more closely packed internal circular folds (plicae circulares) than the ileum. It has few lymphoid nodules (Peyer's patches). The jejunum is about 2.5 m (8.5 feet) long.
inflammation of jejunum
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