inferior mesenteric artery

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in·fe·ri·or mes·en·ter·ic ar·ter·y

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.
Farlex Partner Medical Dictionary © Farlex 2012

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.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

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
Medical Dictionary, © 2009 Farlex and Partners
References in periodicals archive ?
The exciting origin of guinea-pig inferior mesenteric ganglion neurons in vivo.
Computed tomographic angiography revealed a saccular aneurysm at the paravisceral aortic region, a nearly occluded celiac artery, and superior mesenteric artery with a large patent inferior mesenteric artery (7.3 mm), which provided a large collateral in the retroperitoneal space for supplying visceral organs, as shown in Figure 1.
Abbreviations Ao: Abdominal aorta CTA: Computed tomography angiography IMA: Inferior mesenteric artery IVC: Inferior vena cava LRV: Left renal vein MRA: Magnetic resonance angiography NCP: Nutcracker phenomenon NCS: Nutcracker syndrome SMA: Superior mesenteric artery.
Infrarenal aortic injury is most common in the region of the inferior mesenteric artery (IMA) (30-40%), followed by the renal artery region (24%) and then between the IMA and the bifurcation (19%).
the superior mesenteric and inferior mesenteric arteries can supply each other in a bidirectional manner through Riolan' s arterial arch [6]; b.
2) and an extended lymphadenectomy from the renal hilum to the inferior mesenteric artery, and the ipsilateral iliac and pelvic nodes.
Double ligation was conducted at the superior rectal artery root and the root of the inferior mesenteric artery was not ligated regularly.
Preoperative angiography revealed patency of the inferior mesenteric, a large middle sacral and many lumbar arteries; preoperative patient's erectile function was normal.
They are frequently seen in the organ of Zuckerkandl, near the inferior mesenteric artery origin.[4] Typically, these sympathetic tumours secrete catecholamines.
There was a small injury to inferior mesenteric artery which was repaired with no post-operative consequences.
Rarely, accessory renal arteries arise from the superior mesenteric arteries,8 inferior mesenteric artery,2 coeliac and common iliac arteries.1 Thorough knowledge of variations in vascular pattern is important to avoid iatrogenic injuries during surgical procedures.9

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