Duodenojejunal flexure

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.

Additional images

See also

• Transpyloric plane

External links

• - "The large intestine."
• - "Intestines and Pancreas: The Duodenum"