Duodenojejunal flexure

Duodenojejunal flexure
Duodenojejunal flexure
Gray1041.png
Superior and inferior duodenal fossæ.
Illu small intestine.jpg
Small intestine
Latin flexura duodenojejunalis
Gray's subject #248 1170

The duodenojejunal flexure or duodenojejunal junction is the border between the duodenum and the jejunum.

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.

The ligament of Treitz, a peritoneal fold, from the right crus of diaphragm, is an identification point for the duodenojejunal flexure at operation.[1]

Contents

Additional images

  • Duodenojejunal fossa.

  • Front of abdomen, showing surface markings for duodenum, pancreas, and kidneys.


See also

References

  1. ^ Jacob,S. (2007) Chapter 4: Abdomen; Human anatomy, A clinically-orientated approach. P.85

External links

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained within it may be outdated.

v · d · eAnatomy of torso, digestive system: Gastrointestinal tract, excluding mouth (TA A05.3–7, TH H3.04.02-04, GA 11.1141)
Upper GI
Lower GI
Layers
Suspensory muscle, Major duodenal papilla, Minor duodenal papilla, Duodenal cap • Duodenojejunal flexure • Brunner's glands
no substructures
Layers
Serosa · Subserosa · Muscular layer · Submucosa · Mucosa
Transverse folds of rectum • Rectal ampulla

M: DIG

anat(t, g, p)/phys/devp/enzy

noco/cong/tumr, sysi/epon

proc, drug(A2A/2B/3/4/5/6/7/14/16), blte

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