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The duodenojejunal flexure is surrounded by 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.
The suspensory muscle of duodenum (also known as suspensory ligament of duodenum, Treitz's muscle or ligament of Treitz [1]) is a thin muscle connecting the junction between the duodenum and jejunum (the small intestine's first and second parts, respectively), as well as the duodenojejunal flexure to connective tissue surrounding the superior mesenteric and coeliac arteries.
The duodenal bulb is a remnant of the mesoduodenum, a mesentery that suspends the organ from the posterior abdominal wall in fetal life. [10] The first part of the duodenum is mobile, and connected to the liver by the hepatoduodenal ligament of the lesser omentum. The first part of the duodenum ends at the corner, the superior duodenal flexure.
Its lining is specialized for the absorption by enterocytes of small nutrient molecules which have been previously digested by enzymes in the duodenum. The jejunum lies between the duodenum and the ileum and is considered to start at the suspensory muscle of the duodenum, a location called the duodenojejunal flexure. [4]
The root of the mesentery extends from the duodenojejunal flexure to the ileocaecal junction. This section of the small intestine is located centrally in the abdominal cavity and lies behind the transverse colon and the greater omentum .
Grey squirrels, or Eastern grey squirrels, primarily live in the Eastern half of the U.S. and southern Canada. There is also a healthy population in the U.K., where they were imported in the 19th ...
They blend into the surrounding tissue and are fixed in position (for example, the retroperitoneal section of the duodenum usually passes through the transpyloric plane). The retroperitoneal regions include the oral cavity , esophagus , pylorus of the stomach, distal duodenum , ascending colon , descending colon and anal canal .
White River Junction, VT 05001 (802) 295-6300 www.chelseagreen.com EOA2 Final Pages 7/27/07 12:05 PM Page ii — 1 — ...