Transverse mesocolon
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2007-08-05T15:31:18Z
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{{Infobox Anatomy |
Name = {{PAGENAME}} |
Latin = mesocolon sigmoideum |
GraySubject = 246 |
GrayPage = 1157 |
Image = Gray1041.png |
Caption = Superior and inferior duodenal fossæ. (Transverse mesocolon visible at top center.) |
Image2 = Gray1040.png |
Caption2 = Diagram showing the lines along which the peritoneum leaves the wall of the abdomen to invest the viscera. (Transverse mesocolon labeled at center right.) |
System = |
MeshName = |
MeshNumber = |
DorlandsPre = m_10 |
DorlandsSuf = 12526435 |
}}
The '''transverse mesocolon''' is a broad, meso-fold of [[peritoneum]], which connects the [[transverse colon]] to the posterior wall of the [[abdomen]].
It is continuous with the two posterior layers of the [[greater omentum]], which, after separating to surround the transverse colon, join behind it, and are continued backward to the [[vertebral column]], where they diverge in front of the anterior border of the [[pancreas]].
This fold contains between its layers the vessels which supply the transverse colon.
Transverse mesocolon is a derivative of [[dorsal mesentery]] in the embryo.
==Contents==
* 1- [[transverse colon]] ( in the free margin )
* 2- [[middle colic vessels]] and their branches
* 3- [[lymphatics]] and [[lymph node]]s
* 4- [[autonomic]] nerve fibers
* 5- [[extraperitoneal]] fatty tissue
==Additional images==
<gallery>
Image:Gray989.png|Schematic figure of the bursa omentalis, etc. Human embryo of eight weeks.
Image:Gray1042.png|Duodenojejunal fossa.
</gallery>
==External links==
* {{SUNYAnatomyLabs|37|13|02|02}} - "Abdominal Cavity: The Colon and its Divisions"
* {{SUNYAnatomyImage|8|1|76}}
{{digestive-stub}}
{{Gray's}}
{{Peritoneum}}