Right colic artery

The right colic artery is an artery of the abdomen, a branch of the superior mesenteric artery supplying the ascending colon. It divides into two terminal branches - an ascending branch and a descending branch - which form anastomoses with the middle colic artery, and ileocolic artery (respectively).

Right colic artery
The superior mesenteric artery and its branches. (Right colic visible at center.)
Colonic blood supply (right colic artery is #4)
Details
SourceSuperior mesenteric artery
VeinRight colic vein
SuppliesAscending colon
Identifiers
LatinArteria colica dextra
TA98A12.2.12.065
TA24264
FMA14811
Anatomical terminology

The right colic artery may be removed during a right hemicolectomy.

Structure

The right colic artery is a relatively small and variable artery.[1] It affords arterial supply to the ascending colon.[2]

Origin

The right colic artery is a branch of the superior mesenteric artery.[2][3] It usually arises from a common trunk with the middle colic artery, but may also arise directly from the superior mesenteric artery, or from the ileocolic artery.[4]

Course

It passes right-ward posterior to the peritoneum, and anterior to the right gonadal vessels, the right ureter, the psoas major muscle, passing toward the middle of the ascending colon.[5]

Sometimes, it lies at a higher level, and crosses the descending part of the duodenum and the inferior extremity of the right kidney.[6]

At the colon, it divides into a descending branch and an ascending branch. These branches form arches, from the convexity of which vessels are distributed to the ascending colon.[7]

Branches and anastomoses

The descending branch anastomoses with the ileocolic artery.[8]

The ascending branch anastomoses with the middle colic artery.[9]

Variation

The right colic artery is quite variable.[1] It is absent in around 10% of individuals.[10]

Clinical significance

In a right hemicolectomy to remove the caecum and the ascending colon, the right colic artery is ligated and removed.[2][11] Ligation is performed close to the origin of the right colic artery from the superior mesenteric artery.[11]

If part of the superior mesenteric artery is missing due to a congenital abnormality, the right colic artery may supply part of the ileum.[12]

References

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

  1. Standring, Susan (2020). Gray's Anatomy: The Anatomical Basis of Clinical Practice (42th ed.). New York. p. 1193. ISBN 978-0-7020-7707-4. OCLC 1201341621.{{cite book}}: CS1 maint: location missing publisher (link)
  2. 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.
  3. Madani, M. M.; Golts, E. (2014). "Cardiovascular Anatomy". Reference Module in Biomedical Sciences. Elsevier. doi:10.1016/B978-0-12-801238-3.00196-3. ISBN 978-0-12-801238-3.
  4. Gray's anatomy : the anatomical basis of clinical practice. Susan Standring (Forty-second ed.). [New York]. 2021. ISBN 978-0-7020-7707-4. OCLC 1201341621.{{cite book}}: CS1 maint: location missing publisher (link) CS1 maint: others (link)
  5. Gray, Henry (1918). Gray's Anatomy (20th ed.). p. 609.
  6. Gray, Henry (1918). Gray's Anatomy (20th ed.). p. 609.
  7. Gray, Henry (1918). Gray's Anatomy (20th ed.). p. 609.
  8. Gray, Henry (1918). Gray's Anatomy (20th ed.). p. 609.
  9. Gray, Henry (1918). Gray's Anatomy (20th ed.). p. 609.
  10. 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.
  11. 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.
  12. Ziegler, Moritz M.; Garza, Jennifer J. (2004). "Intestinal Atresia". Encyclopedia of Gastroenterology. Academic Press. pp. 443–446. doi:10.1016/B0-12-386860-2/00768-1. ISBN 978-0-12-386860-2.
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