Greater Omentum Movie

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Greater omentum 001 icon.jpg
This animation shows the development of the greater omentum associated with the greater curvature of the stomach.


The greater omentum begins as an extended fold of the dorsal mesogastrium that continues to grow and extend down into the peritoneal cavity and eventually lies anterior to the small intestines. This fold of mesentery will also fuse to form a single sheet.


Legend

  • liver
  • gastrointestinal tract
  • mesentery


Links: MP4 version | greater omentum | Gastrointestinal Tract Development | Movies

Greater Omentum

A peritoneal fold of splanchnic mesoderm extending from the greater curvature of the stomach and hanging ventrally down "like an apron" in the peritoneal cavity over the small intestine. It forms initially in the embryo and fetus as a loop of the dorsal mesentery, which later fuses to form a single sheet attached to the posterior body wall. The lesser omentum is a smaller ventral peritoneal fold extending from lesser curvature of the stomach to liver.

From Gray's Anatomy: greater omentum (omentum majus; great omentum; gastrocolic omentum) is the largest peritoneal fold. It consists of a double sheet of peritoneum, folded on itself so that it is made up of four layers. The two layers which descend from the stomach and commencement of the duodenum pass in front of the small intestines, sometimes as low down as the pelvis; they then turn upon themselves, and ascend again as far as the transverse colon, where they separate and enclose that part of the intestine. These individual layers may be easily demonstrated in the young subject, but in the adult they are more or less inseparably blended. The left border of the greater omentum is continuous with the gastrolienal ligament; its right border extends as far as the commencement of the duodenum. The greater omentum is usually thin, presents a cribriform appearance, and always contains some adipose tissue, which in fat people accumulates in considerable quantity. Between its two anterior layers, a short distance from the greater curvature of the stomach, is the anastomosis between the right and left gastroepiploic vessels.

Gastrointestinal Tract Movies  
Mesoderm 001 icon.jpg
 ‎‎Week 3 Mesoderm
Page | Play
Week3 folding icon.jpg
 ‎‎Week 3
Page | Play
Amnion 001 icon.jpg
 ‎‎Amniotic Cavity
Page | Play
Endoderm 002 icon.jpg
 ‎‎Endoderm
Page | Play
Stomach rotation 01 icon.jpg
 ‎‎Stomach Rotation
Page | Play
Gastrointestinal tract growth 01 icon.jpg
 ‎‎Tract Growth
Page | Play
Greater omentum 001 icon.jpg
 ‎‎Greater Omentum
Page | Play
Lesser sac 01 icon.jpg
 ‎‎Lesser sac
Page | Play
Urogenital septum 001 icon.jpg
 ‎‎Urogenital Septum
Page | Play
Stage13-GIT-icon.jpg
 ‎‎GIT Stage 13
Page | Play
Stage22-GIT-icon.jpg
 ‎‎GIT Stage 22
Page | Play
Stage23 MRI S04 icon.jpg
 ‎‎Sagittal GIT
Page | Play
ChickenGITmotility-icon.jpg
 ‎‎GIT Motility
Page | Play
Gastroschisis 01.jpg
 ‎‎Gastroschisis
Page | Play
Omphalocele 01 icon.jpg
 ‎‎Omphalocele
Page | Play
Stage 13 (week 5) Stage 22 (week 8) Stage 23 (week 8) GIT Abnormalities Ultrasound


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Cite this page: Hill, M.A. (2019, November 23) Embryology Greater Omentum Movie. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Greater_Omentum_Movie

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© Dr Mark Hill 2019, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G