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The bony labyrinth is a cavity within the temporal bone that houses the structures of the inner ear, responsible for hearing and balance. It is divided into three main sections: the vestibule, the semicircular canals, and the cochlea. Within this bony structure lies a membranous labyrinth, which contains the sensory organs for hearing and equilibrium.1

The semicircular canals are arranged at right angles to each other and detect rotational movements of the head. The vestibule contains the utricle and saccule, which respond to linear acceleration and changes in head position relative to gravity. The cochlea, a spiral-shaped cavity, contains the organ of Corti, which is responsible for converting sound vibrations into nerve impulses that are sent to the brain for interpretation as sound.12

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