superior mesenteric artery

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su·pe·ri·or mes·en·ter·ic ar·ter·y

[TA]
origin, at the L1 vertebral level as the second anterior visceral branch of the abdominal aorta; branches, inferior pancreaticoduodenal, jejunal, ileal, ileocolic, appendicular, right colic, middle colic; anastomoses, superior pancreaticoduodenal and left colic.

superior mesenteric artery

a visceral branch of the abdominal aorta, arising inferior to the celiac artery, dividing into five branches, and supplying most of the small intestine and parts of the colon. The branches are the inferior pancreaticoduodenal, intestinal, ileocolic, right colic, and middle colic.

su·pe·ri·or mes·en·ter·ic ar·te·ry

(sŭ-pēr'ē-ŏr mez'en-ter'ik ahr'tĕr-ē) [TA]
Origin, abdominal aorta; branches, inferior pancreaticoduodenal, jejunal, ileal, ileocolic, appendicular, right colic, middle colic; anastomoses, superior pancreaticoduodenal and left colic.
Synonym(s): arteria mesenterica superior.

superior mesenteric artery

Abbreviation: SMA
The second unpaired midline artery branching from the abdominal aorta; it originates 1 to 2 cm distal to the celiac artery. It supplies blood to the midgut, i.e., the distal half of the duodenum, the jejunum, the ileum, the ascending colon, and the proximal half of the transverse colon. Its branches include the inferior pancreaticoduodenal, jejunal, ileal, ileocolic, marginal, and right and middle colic arteries.
See: aorta (Branches of aorta)and circulation (Circulation of blood through heart and major vessels) for illus.
See also: artery