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tym·pan·ic mem·brane

a thin tense membrane forming the greater part of the lateral wall of the tympanic cavity and separating it from the external acoustic meatus; it constitutes the boundary between the external and middle ears; it is a trilaminar membrane covered with skin on its external surface, mucosa in its internal surface, is covered on both surfaces with epithelium, and, in the tense part, has an intermediate layer of outer radial and inner circular collagen fibers.
Farlex Partner Medical Dictionary © Farlex 2012


See eardrum.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
References in periodicals archive ?
The customized mixer, which features an attached bent needle, directs adhesive into the channel as the drumhead rotates.
In addition, the static mixer helps Remo satisfy its tight requirements for applying the adhesive to the drumhead. "Operators are assured of the precise application of adhesive," says Remo's Tim Ridgway.