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Diagrams to illustrate the development of the greater omentum and transverse mesocolon

Further changes take place in the bursa omentalis and in the common mesentery, and give rise to the peritoneal relations seen in the adult. The bursa omentalis, which at first reaches only as far as the greater curvature of the stomach, grows downward to form the greater omentum, and this downward extension lies in front of the transverse colon and the coils of the small intestine (Fig. 989). Above, before the pleuro-peritoneal opening is closed, the bursa omentalis sends up a diverticulum on either side of the esophagus; the left diverticulum soon disappears, but the right is constricted off and persists in most adults as a small sac lying within the thorax on the right side of the lower end of the esophagus. The anterior layer of the transverse mesocolon is at first distinct from the posterior layer of the greater omentum, but ultimately the two blend, and hence the greater omentum appears as if attached to the transverse colon (Fig. 990). The mesenteries of the ascending and descending parts of the colon disappear in the majority of cases, while that of the small intestine assumes the oblique attachment characteristic of its adult condition.


Links: Image 987a | Image 987b | Image - Early Week 4 | Image - Late Week 4 | Gastrointestinal Tract Development | Endoderm




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Reference

Gray H. Anatomy of the human body. (1918) Philadelphia: Lea & Febiger.


Cite this page: Hill, M.A. (2024, June 17) Embryology Gray0990.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Gray0990.jpg

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current15:56, 28 April 2011Thumbnail for version as of 15:56, 28 April 2011800 × 407 (60 KB)MarkHill (talk | contribs)==Diagrams to illustrate the development of the greater omentum and transverse mesocolon== Further changes take place in the bursa omentalis and in the common mesentery, and give rise to the peritoneal relations seen in the adult. The bursa omentalis, wh