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musculotubal canal

(mŭs′kyə-lō-tōōbəl)
n.
  1. A canal beginning at the petrous portion of the temporal bone, passing to the tympanic cavity, and divided into one canal for the auditory tube and into another canal for the tensor muscle of the tympanic membrane.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.