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Introduction to Inner Ear Disorders

By Lawrence R. Lustig, MD, New York Presbyterian Hospital/Columbia University Medical Center

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(See Hearing Loss.)

The inner ear is in the petrous area of the temporal bone. Within the bone is the osseous labyrinth, which encases the membranous labyrinth. The osseous labyrinth includes the vestibular system (made up of the semicircular canals and the vestibule) and the cochlea. The vestibular system is responsible for balance and posture; the cochlea, for hearing.

Inside the Ear

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* This is the Professional Version. *