opposer muscle of thumb

opposer muscle of thumb definition - medical

opposer muscle of thumb

noun
A muscle with origin from the trapezium bone and the flexor retinaculum, with insertion into the first metacarpal bone, with nerve supply from the median nerve, and whose action allows the thumb to move in a direction in contrast to that of the other fingers.

The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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