tympanic membrane

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Related to tympanic membrane: Tympanic membrane perforation

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

Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

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 ?

There is no relation of duration of symptoms with either size or site of tympanic membrane perforation in chronic otitis media.

ASSESSMENT OF DEGREE OF HEARING LOSS DEPENDING ON SITE AND SIZE OF TYMPANIC MEMBRANE PERFORATION IN INACTIVE MUCOSAL VARIETY OF CHRONIC OTITIS MEDIA

Perforation involves 10-20% of the tympanic membrane area

The Effect of Tympanic Membrane Perforation Site, Size and Middle Ear Volume on Hearing Loss

Perforation of the tympanic membrane (TM) due to trauma is a common occurrence across the globe due to human violence.

Incidence and characteristics of Traumatic Tympanic Membrane perforation

In total, postoperative tympanic membrane perforation was found in 10.0% of patients in the control group and 13.3% in case group with no significant difference (P = 0.500).

Randomized Clinical Trial Comparing Bucket Handle and Cartilage Tympanoplasty Techniques for the Reconstruction of Subtotal or Anterior Tympanic Membrane Perforation

The graft may be placed on outer surface (on-lay) or inner surface (underlay) of the tympanic membrane. In the underlay technique the graft is supported by gel foam in the middle ear.

OUTCOME OF TYPE-1 TYMPANOPLASTY: A SURGICAL MANAGEMENT OF CHRONIC SUPPURATIVE OTITIS MEDIA

Due to the above mentioned reasons, tympanic membrane was investigated in these ways:

Numerical analysis of the tympanic membrane vibrations

As I read and reread the headline, I kept asking myself, "What did the key used to be?" I always thought that I was supposed to he looking at the tympanic membranes to make a diagnosis of AOM.

'Ya gotta do it!'

Middle ear is a closed gas containing space and pressures as low as 5 psi can rupture the tympanic membrane, with higher pressures even ossicular chain can be damaged.

OTOLOGICAL TRAUMA: AN EXPERIENCE AT CMH PESHAWER

Core body temperature measurement: a comparison of axilla, tympanic membrane and pulmonary artery blood temperature.

Analysis of the effect of lying on the ear on body temperature measurement using a tympanic thermometer

* The size of the lumen of the VT and the length of the tube are the two main factors that increase the length of 'stay' of a VT in the tympanic membrane. These two factors will also make it more probable that the VT forms a persistent perforation of the tympanic membrane.

An approach to chronic otitis media with effusion--the pros and cons of grommets: grommets or not? This reviews the indications for grommets

Look for mobility, position, and appearance when assessing the tympanic membrane, because all three should factor into the diagnosis of AOM.

Guidelines hone acute otitis media Dx

Surgical success was defined as an intact tympanic membrane after at least 2 years.