Internal ear

The internal ear (also inner ear, latin: auris interna) is an essential part of the auditory and vestibular system consisting of cavities and canals, where eventually sound waves are converted into electrical impulses.

The structures of the internal ear are located within the petrous part of the temporal bone and is composed of two parts - the bony and the membranous labyrinth. The bony labyrinth of the internal ear is comprised of the vestibule, semicircular canals and cochlea. The membranous labyrinth, which is enclosed by the bony labyrinth, forms small sacs (saccule and utricle) and tubules (semicircular ducts and cochlear duct).