tensor muscle of tympanic membrane


A muscle with origin from the eustachian tube, with insertion into the handle of the malleus, with nerve supply from the branches of the trigeminal nerve through the otic ganglion, and whose action draws the handle of the malleus medialward and tenses the tympanic membrane.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.