Inferior mesenteric vein
{{Short description|Vein which drains blood from the large intestine}}
{{Infobox vein
| Name = Inferior mesenteric vein
| Latin = vena mesenterica inferior
| Image = Gray591.png
| Caption = The portal vein and its tributaries. The superior mesenteric vein and splenic vein, into which the inferior mesenteric vein empties. Leinal vein is an old term for splenic vein. Anatomical position.
| Image2 = Gray1041.png
| Caption2 = Superior and inferior duodenal fossæ.
| DrainsTo = Splenic vein
| Artery = Inferior mesenteric artery
| System = Hepatic portal system
|DrainsFrom=Gastrointestinal tract|Source=Left colic vein, sigmoid veins, superior rectal vein,}}
In human anatomy, the inferior mesenteric vein (IMV) is a blood vessel that drains blood from the large intestine. It usually terminates when reaching the splenic vein, which goes on to form the portal vein with the superior mesenteric vein (SMV).
Structure
The inferior mesenteric vein merges with the splenic vein, posterior to the middle of the body of the pancreas.{{Cite journal|last=Pirog|first=T. P.|date=December 2019|title=POST-HARVEST TREATMENT OF VEGETABLES WITH EXOMETABOLITES OF Nocardia vaccinii IMV B-7405, Аcinetobacter calcoaceticus IMV В-7241 AND Rhodococcus erythropolis IMV Ас-5017 TO EXTEND THEIR SHELF LIFE|journal=Biotechnologia Acta|volume=12|issue=6|pages=46–55|doi=10.15407/biotech12.06.046|issn=2410-7751|doi-access=free}} The splenic vein then merges with the superior mesenteric vein to form the portal vein.
=Tributaries =
Tributaries of the inferior mesenteric vein drain the large intestine, sigmoid colon and rectum. These include:
- left colic vein
- sigmoid veins
- superior rectal vein
- rectosigmoid veins
= Variation =
Anatomical variations include the inferior mesenteric vein draining into the confluence of the superior mesenteric vein and splenic vein and the inferior mesenteric vein draining in the superior mesenteric vein.
Clinical significance
The inferior mesenteric vein may be damaged during surgery on the body and tail of the pancreas.{{Citation|last1=Dhanireddy|first1=Kiran K.|title=Chapter 36 - Distal Pancreatectomy|date=2009-01-01|url=https://www.sciencedirect.com/science/article/pii/B9781416029519500463|work=Surgical Pitfalls|pages=375–378|editor-last=Evans|editor-first=Stephen R. T.|place=Philadelphia|publisher=W.B. Saunders|language=en|doi=10.1016/b978-141602951-9.50046-3|isbn=978-1-4160-2951-9|access-date=2021-02-06|last2=Fishbein|first2=Thomas M.|url-access=subscription}} If a serious laceration occurs, the inferior mesenteric vein may be ligated, as other veins can drain the large intestine.
Additional images
Image:Gray1099.png|The pancreas and duodenum from behind.
References
External links
- {{cite web|url=http://www.medcyclopaedia.com/library/topics/volume_ii/m/MESENTERIC_VEIN_INFERIOR.aspx |archive-url=https://archive.today/20110526153109/http://www.medcyclopaedia.com/library/topics/volume_ii/m/MESENTERIC_VEIN_INFERIOR.aspx |url-status=dead |archive-date=2011-05-26 |title=Mesenteric vein inferior |publisher=GE |work=Medcyclopaedia }}
- {{SUNYAnatomyLabs|39|06|01|00}} - "Intestines and Pancreas: Tributaries of Inferior Mesenteric Vein"
- {{SUNYAnatomyImage|8|5|68}}
- {{SUNYAnatomyImage|8|6|94}}
{{Veins}}
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