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ulnar collateral artery

n.
  1. An artery with origin in the brachial artery, with distribution to the arm muscles at the back of the elbow; inferior ulnar collateral artery.
  2. An artery with origin in the brachial artery, with distribution to the elbow joint; superior ulnar collateral artery.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.