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sigmoid artery

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n.
Any of the arteries with their origin in the inferior mesenteric artery, with distribution to the descending colon and sigmoid flexure, and with anastomoses to the left colic and superior rectal arteries.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

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