inferior mesenteric artery


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in·fe·ri·or mes·en·ter·ic ar·ter·y

[TA]
origin, at the L3 vertebral level as the third and smallest anterior visceral branch of the abdominal aorta; branches, left colic, sigmoid, superior rectal; anastomoses, middle colic and middle rectal.

inferior mesenteric artery

a visceral branch of the abdominal aorta, arising just above the division into the common iliacs and supplying the left half of the transverse colon, all of the descending and iliac colons, and most of the rectum. It has left colic, sigmoid, and superior rectal branches.
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Inferior mesenteric artery

in·fe·ri·or mes·en·ter·ic ar·te·ry

(in-fēr'ē-ŏr mez'en-ter'ik ahr'tĕr-ē) [TA]
Origin, abdominal aorta; branches, left colic, sigmoid, superior rectal; anastomoses, middle colic and middle rectal.
Synonym(s): arteria mesenterica inferior.

inferior mesenteric artery

The third unpaired midline artery that branches from the abdominal aorta; it originates 3 to 4 cm proximal to the aortic bifurcation. It supplies blood to the hindgut, i.e., the distal half of the transverse colon, the descending colon, the sigmoid colon, and the rectum. Its branches include the left colic, sigmoid, and superior rectal arteries.
See: aorta (Branches of aorta), circulation (Circulation of blood through heart and major vessels) for illus.
See also: artery
References in periodicals archive ?
The Gynecologic Oncology Group (GOG) surgical manual defines para-aortic lymphadenectomy as being in the basin below the inferior mesenteric artery, according to Dr.
Nearly two-thirds (62%) of patients with cancerous nodes below the inferior mesenteric artery also had involved nodes above the artery that would not have been detected without high para-aortic dissection.
CT, and in our case SA is giving one branch to supply the transverse colon near splenic flexure which is usually supplied by inferior mesenteric artery (artery of hindgut), may be due to the ramification in arterial development.
Initially the inferior mesenteric artery descends anteriorly to the aorta and then passes to the left as it continues inferiorly.
The left colic artery is the first branch of the inferior mesenteric artery.
The lower pole of both kidneys was fused by the isthmus and was below the origin of inferior mesenteric artery.
In our report, it is present below the origin of inferior mesenteric artery.
5 cm below the origin of the Inferior Mesenteric Artery (IMA) from the antero lateral aspect of the Aortic Bifurcation (Figure 1, 3& 4), an aberrant renal artery was seen coursing upwards, backwards and laterally & made its portal of entry by penetrating into the medial border (Figure 2, 3 & 4) and extending on to the posterior surface by piercing the capsule just half cm.
9] In the present case the kidney was supplied by (hilar renal artery) & lower polar artery, which arose from the aortic bifurcation below the origin of inferior mesenteric artery.

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