short extensor muscle of thumb

Medical Dictionary

short extensor muscle of thumb n.
A muscle with origin from the dorsal surface of the radius, with insertion into the base of the proximal phalanx of the thumb, with nerve supply from the radial nerve, and whose action extends and abducts the thumb.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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