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The inner ear is the innermost part of the vertebrate ear. In vertebrates, the inner ear is mainly responsible for sound detection and balance. In Mammals, it consists of the bony labyrinth, a hollow cavity in the TemporalBone of the skull with a system of passages comprising two main functional parts: (1) The cochlea, dedicated to hearing; converting sound pressure patterns from the AuditoryCanal into electrochemical impulses which are passed on to the Brain via the auditory nerve. (2) The vestibular system, dedicated to balance. The inner ear is found in all Vertebrates, with substantial variations in form and function. The inner ear is innervated by the eighth cranial nerve in all vertebrates. [from Wikipedia]
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