Monday, June 18, 2012

Inner Ear

The inner ear is the portion of the ear located in the temporal bone, consisting of the vestibule, the cochlea, and semicircular canals. The vestibule lies in the central part of the inner ear, between the cochlea and the semicircular canals. The cochlea is where the acoustic vibrations are converted into waves, which in turn stimulate the hair cells in the scala media (cochlear duct) of the cochlea, generating electrical impulses that travel to the temporal lobe of the cerebral cortex through the auditory nerve. The semicircular canals are involved in the sense of balance and equilibrium.