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tym·pan·ic mem·brane

[TA]
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

drum

(drŭm)
n.
Anatomy The eardrum.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

tym·pan·ic mem·brane

(tim-pan'ik mem'brān) [TA]
A thin, tense covering that forms the greater part of the lateral wall of the tympanic cavity and separates it from the external acoustic meatus; it constitutes the boundary between the external and middle ear, is covered on both surfaces with epithelium, and in the tense part has an intermediate layer of outer radial and inner circular collagen fibers.
Synonym(s): membrana tympani [TA] , drum membrane, drum, drumhead, eardrum, myringa, myrinx.
[L. membrana tympani]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
Elizabeth Ramsay, prosecuting, said: "He ignored several police warnings and kept beating the drum."
Kelash people danced in their villages and came to Bron main dancing place in groups by beating the drum and dancing on their way.
ISLAMABAD -- Minister for information and technology Anosha Rehman said Monday PTI kept on beating the drum of 35 punctures for 4 months but it did not even bother to say a single word about it before Judicial Commission (JC).
te Yet I'm struck at how w many of those beating the drum to bomb Syria also oppose international aid.
He said that it was unfortunate that some people, even today, believed in coercive tactics, while at the same time beating the drum of democracy and elections.
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