Middle colic artery

Middle colic artery
Middle colic artery
	The superior mesenteric artery and its branches. (Middle colic visible at center top.)
	Colonic blood supply (Middle colic artery is #6)
Details
Source	superior mesenteric artery
Vein	Middle colic vein
Supplies	transverse colon
Identifiers
Latin	arteria colica media
TA98	A12.2.12.067
TA2	4265
FMA	14810
	Anatomical terminology

The middle colic artery is an artery of the abdomen. It is a branch of the superior mesenteric artery that mostly supplies the transverse colon. Parts of it may be removed in different types of hemicolectomy.

Structure

The middle colic artery is a branch of the superior mesenteric artery.[1] It arises just below the pancreas. It passes inferiorly and anteriorly between the layers of the transverse mesocolon.[1] It divides into left and right branches. The right branch anastomoses with the right colic artery. The left anastomoses with the left colic artery, a branch of the inferior mesenteric artery (forming the arc of Riolan).[2] This sequence of anastomoses help to form the marginal artery of the colon.[1] The arches formed are about two fingers’ breadth from the transverse colon, to which they distribute branches.

Variation

The middle colic artery may rarely originate from the splenic artery.[3] An extra accessory middle colic artery can be found in between 10% and 20% of people.[2]

Function

The middle colic artery supplies the right two thirds of the transverse colon, and an upper part of the ascending colon.[1]

Clinical significance

In a right hemicolectomy to remove the caecum and the ascending colon, the right branch of the middle colic artery is ligated and removed.[1][4] In a transverse hemicolectomy, the entire middle colic artery may need to be ligated and removed.[4]

References

This article incorporates text in the public domain from page 609 of the 20th edition of Gray's Anatomy (1918)

Jacob, S. (2008). "4 - Abdomen". Human Anatomy. Churchill Livingstone. pp. 71–123. doi:10.1016/B978-0-443-10373-5.50007-5. ISBN 978-0-443-10373-5.
Mazzucchelli, Luca; Maurer, Christoph (2004). "Colon, Anatomy". Encyclopedia of Gastroenterology. Academic Press. pp. 408–412. doi:10.1016/B0-12-386860-2/00147-7. ISBN 978-0-12-386860-2.
Amonoo-Kuofi, Harold S.; El-Badawi, Mohamed G. Y.; El-Naggar, Mahmoud E. (1995). "Anomalous origins of colic arteries". Clinical Anatomy. 8 (4): 288–293. doi:10.1002/ca.980080408. ISSN 1098-2353.
Ramsanahie, Anthony; Bleday, Ronald (2004). "Colectomy". Encyclopedia of Gastroenterology. Academic Press. pp. 366–371. doi:10.1016/B0-12-386860-2/00140-4. ISBN 978-0-12-386860-2.

External links

Anatomy photo:39:03-0101 at the SUNY Downstate Medical Center - "Intestines and Pancreas: Branches of Superior Mesenteric Artery"
Anatomy image:8579 at the SUNY Downstate Medical Center
sup&infmesentericart at The Anatomy Lesson by Wesley Norman (Georgetown University)

This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.

[:0-1] Jacob, S. (2008). "4 - Abdomen". Human Anatomy. Churchill Livingstone. pp. 71–123. doi:10.1016/B978-0-443-10373-5.50007-5. ISBN 978-0-443-10373-5.

[:1-2] Mazzucchelli, Luca; Maurer, Christoph (2004). "Colon, Anatomy". Encyclopedia of Gastroenterology. Academic Press. pp. 408–412. doi:10.1016/B0-12-386860-2/00147-7. ISBN 978-0-12-386860-2.

[3] Amonoo-Kuofi, Harold S.; El-Badawi, Mohamed G. Y.; El-Naggar, Mahmoud E. (1995). "Anomalous origins of colic arteries". Clinical Anatomy. 8 (4): 288–293. doi:10.1002/ca.980080408. ISSN 1098-2353.

[:2-4] Ramsanahie, Anthony; Bleday, Ronald (2004). "Colectomy". Encyclopedia of Gastroenterology. Academic Press. pp. 366–371. doi:10.1016/B0-12-386860-2/00140-4. ISBN 978-0-12-386860-2.