Duodenojejunal flexure
| Duodenojejunal flexure | |
|---|---|
 Superior and inferior duodenal fossæ. | |
 Small intestine | |
| Details | |
| Identifiers | |
| Latin | flexura duodenojejunalis |
| TA98 | A05.6.02.009 |
| TA2 | 2952 |
| FMA | 15957 |
| Anatomical terminology | |
The duodenojejunal flexure or duodenojejunal junction, also known as the angle of Treitz,[1][2] is the border between the duodenum and the jejunum.
Structure
The ascending portion of the
suspensory muscle of the duodenum.[4]: 274 It is retroperitoneal, so is less mobile than the jejunum that comes after it, helping to stabilise the jejunum.[5]
The duodenojejunal flexure lies in front of the left
psoas major muscle, the left renal artery, and the left renal vein. It is covered in front, and partly at the sides, by peritoneum continuous with the left portion of the mesentery
.
Clinical significance
The
ligament of Treitz, a peritoneal fold, from the right crus of diaphragm, is an identification point for the duodenojejunal flexure during abdominal surgery.[6]
: 85
Additional images
-
Duodenojejunal fossa. -
Front of abdomen, showing surface markings forkidneys.
See also
References
This article incorporates text in the public domain from page 1170 of the 20th edition of Gray's Anatomy (1918)
- ^ Lissauer et.al. Neonatology at a Glance. John Wiley & Sons, 2020, p.125.
- ISBN 978-0-323-47781-9, retrieved 2021-01-26
- ISBN 978-0-8089-2306-0.
- ISBN 978-0-12-803230-5, retrieved 2021-01-26
- ^ Jacob, S. (2007) Chapter 4: Abdomen; Human anatomy, A clinically-orientated approach.
External links
- Anatomy figure: 37:06-04 at Human Anatomy Online, SUNY Downstate Medical Center - "The large intestine."
- Anatomy photo:39:07-0105 at the SUNY Downstate Medical Center - "Intestines and Pancreas: The Duodenum"
- Anatomy image:8155 at the SUNY Downstate Medical Center
