n :  either of the two small branches of the ulnar artery arising from its medial side:  a  :  one that arises just below the elbow and supplies the brachialis muscle and the pronator teres - called also anterior ulnar recurrent artery   b  :  one that is larger, arises lower on the arm, and supplies the elbow and associated muscles - called also posterior ulnar recurrent artery  .
 
 
 
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