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Superior mesenteric vein

Vein which drains blood from the small intestine

Summary

Vein which drains blood from the small intestine

Field	Value
Name	Superior mesenteric vein
Latin	vena mesenterica superior
Image	Gray591.png
Caption	The abdomen viewed from the front, showing the portal venous system, showing the superior mesenteric vein and its tributaries. (Lienal vein is an old term for splenic vein.)
DrainsTo	Hepatic portal vein
Artery	Superior mesenteric artery
System	Hepatic portal system

In human anatomy, the superior mesenteric vein (SMV) is a blood vessel that drains blood from the small intestine (jejunum and ileum). Behind the neck of the pancreas, the superior mesenteric vein combines with the splenic vein to form the portal vein that carries blood to the liver. The superior mesenteric vein lies to the right of the similarly named artery, the superior mesenteric artery, which originates from the abdominal aorta.

Structure

Tributaries of the superior mesenteric vein drain the small intestine, large intestine, stomach, pancreas and appendix and include:

Right gastro-omental vein (also known as the right gastro-epiploic vein)
inferior pancreaticoduodenal veins
veins from jejunum
veins from ileum
middle colic vein – drains the transverse colon
right colic vein – drains the ascending colon
ileocolic vein The superior mesenteric vein combines with the splenic vein to form the portal vein.

Clinical significance

Thrombosis of the superior mesenteric vein is quite rare, but a significant cause of mesenteric ischemia and can be fatal. It is estimated that 10–15% of mesenteric ischemia is due to mesenteric thrombosis.

References

Additional images

File:Slide8gre.JPG|Abdominal cavity.Superior mesenteric vein.Deep dissection.

References

(2017-01-01). "Diagnostic angiography in hepatobiliary and pancreatic disease: Indications". Blumgart's Surgery of the Liver, Biliary Tract and Pancreas, 2-Volume Set.
(2004-01-01). "Portal Hypertension and Esophageal Varices". Elsevier.
(2020-12-05). "Acute Mesenteric Ischemia: Background, Anatomy, Pathophysiology".

Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

veins-of-the-torso

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