tympanic membrane

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tympanic membrane

the thin translucent oval membrane separating the external ear from the middle ear. It transmits vibrations produced by sound waves, via the ossicles, to the cochlea

Tympanic Membrane

 

eardrum, a thin layer of connective tissue and epithelium covering the opening of the tympanic cavity in the ear of terrestrial vertebrates and man. The tympanic membrane is absent in caudate and legless amphibians and burrowing snakes. Sound waves on striking the membrane cause it to vibrate. The vibrations are then transmitted to the inner ear mostly by the auditory ossicles. The membrane is divided into three concentric zones in mammals and man because of the uneven action of forces on some of its parts: medial (which moves without becoming deformed), intermediate (the most delicate and strongly vibrated), and lateral (hinged, movable).

G. N. SIMKIN

tympanic membrane

[tim′pan·ik ′mem‚brān]
(anatomy)
The membrane separating the external from the middle ear. Also known as eardrum; tympanum.
References in periodicals archive ?
The study included unilateral central perforation of the tympanic membrane in 36 cases, post myringoplasty residual and recurrent perforation in 4 cases due to coryza in the same patients.
Many different materials have been used to reconstruct the tympanic membrane with the goals of achieving a high initial graft integration rate, a low rate of reperforation, and normal hearing.
This otoendoscopic photograph shows the near total tympanic perforation and mesotympahnic structures, including the round window niche, the pyramidal process with stapedial muscle tendon, the facial nerve, the cochleariform process, and ossicular chain.
With the assistance of a 0-degree otoendoscope, the margins of the tympanic membrane perforation were freshened with a micro pick.
The cases were randomized by card method irrespective of gender, age and size of the tympanic membrane perforation into two groups on the basis of type of surgery performed.
Accumulated bacteria and debris in horizontal ear canal can eventually access tympanic cavity.
The aim of surgery is to eliminate the infection and render the ear safe, to prevent reinfection by closing the perforation of tympanic membrane and to improve hearing.
There are many diseases, which cause the tympanic membrane defects; the most common is the tympanic membrane perforation.
Determinants of hearing loss in perforations of the tympanic membrane.
Once Tympanic selected Nebraska, the group sought out 10 scribes from around the country who would write short plays based on each of the album's 10 songs.
I'm not talking about the situation in which one physician has seen a normal tympanic membrane at 4 in the afternoon and at 7 in the morning the same ear has drained.
Tympanic membrane and middle ear injuries are more commonly seen with blast trauma.