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The inner ear (internal ear, auris interna) is the innermost part of the vertebrate ear. In vertebrates, the inner ear is mainly responsible for sound detection and balance. 〔 Torres, M., Giráldez, F. (1998) The development of the vertebrate inner ear. ''Mechanisms of Development'' 71 (1-2) pg 5-21 〕 In mammals, it consists of the bony labyrinth, a hollow cavity in the temporal bone of the skull with a system of passages comprising two main functional parts:〔 J.M. Wolfe et al. (2009). ''Sensation & Perception''. 2nd ed. Sunderland: Sinauer Associated Inc〕 * The cochlea, dedicated to hearing; converting sound pressure patterns from the outer ear into electrochemical impulses which are passed on to the brain via the auditory nerve. * 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. ==Structure== The labyrinth can be divided by layer or by region. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「inner ear」の詳細全文を読む スポンサード リンク
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