duodenojejunal junction

Also found in: Acronyms.

du·o·de·no·je·ju·nal junc·tion

point along the course of the gastrointestinal tract where the duodenum ends and the jejunum begins; occurs approximately at the level of the L2 vertebra, 2-3 cm to the left of the midline; usually takes the form of an acute angle, the duodenojejunal flexure, and is supported by the attachment of the suspensory muscle (ligament) of the duodenum.
See also: duodenojejunal flexure.