Duodenojejunal flexure

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Duodenojejunal flexure
Superior and inferior duodenal fossæ.
Illu small intestine.jpg
Small intestine
Latin flexura duodenojejunalis
Gray's subject #248 1170
Dorlands/Elsevier f_09/12368320

The ascending portion of the duodenum ascends on the left side of the aorta, as far as the level of the upper border of the second lumbar vertebra, where it turns abruptly forward to become the jejunum, forming the duodenojejunal flexure.

It lies in front of the left Psoas major and left renal vessels, and is covered in front, and partly at the sides, by peritoneum continuous with the left portion of the mesentery.

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This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.