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As a conductor, it improves sound transmission to eardrums. This is an essential feature to diminish feedback paths in hearing aids and assure better intelligibility in noisy-environment communication.
Tympanic membrane retraction describes a condition in which a part of the eardrum lies deeper within the ear than its normal position. The eardrum comprises two parts: the pars tensa , which is the main part of the eardrum, and the pars flaccida , which is a smaller part of the eardrum located above the pars tensa.
On its lateral surface, it abuts the external auditory meatus [ ear canal ] from which it is separated by the tympanic membrane (eardrum). Walls. The tympanic cavity is bounded by:
Conductive hearing loss (CHL) occurs when there is a problem transferring sound waves anywhere along the pathway through the outer ear, tympanic membrane (eardrum), or middle ear . If a conductive hearing loss occurs in conjunction with a sensorineural hearing loss, it is referred to as a mixed hearing loss.
Tympanostomy tube in the eardrum, draining fluid from the middle ear during an ear infection. Inserting tympanostomy tubes is one of the most common pediatric surgical procedures United States, with 9% of children having had tubes placed sometime in their lives.
A typical mammalian middle ear: sound makes the tympanum (eardrum) vibrate; 3 small bones, the malleus, incus and stapes, transmit the vibrations to the labyrinth (inner ear), which transforms the vibrations into nerve signals.