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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.

drum

(drum) tympanic membrane.

drum

(drŭm)
n.
Anatomy The eardrum.

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]
References in periodicals archive ?
Dear Editor, It is excellent news for Birmingham that one of its most prominent and able sons has been appointed to a Cabinet post (Sir Digby: I'll bang the drum for Brum, Post June 30).
CANNOCK Chase MP Aidan Burley has pledged to bang the drum for Midland business transport needs after being appointed Parliamentary Private Secretary to Philip Hammond, Secretary of State for Transport.
Mr McCabe said: "These are difficult economic times and one of my most important tasks as an MP is to bang the drum for Birmingham and showcase what we have to offer global companies.