Thursday, May 6, 2010

Eardrum


The eardrum is a thin membrane that separates the external ear from the middle ear. Its function is to transmit sound from the air to the ossicles inside the middle ear. The malleus bone bridges the gap between the eardrum and the other ossicles. Rupture or perforation of the eardrum can lead to conductive hearing loss.

The tympanic membrane is shaped like a flat cone pointing inwards towards the inner ear and is made up of three layers: 1) Cutaneum ~ skin 2) Radiatum, circulare ~ collagen fibres 3) Mucosum, epithelium.

Matt: CORRECT
Record: 236-190

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