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→Function - Hearing
==Function - Hearing==
==Function - Hearing==
The external ear receives sounds, which cause vibrations of the tympanic membrane. These vibrations move along the ossicles of the middle ear, to be transmitted to the inner ear. The stapes is connected to the oval window, so when the stapes transmits vibrations, this causes movement of perilymph that is in the inner ear. The movement of the perilymph is transmitted via the scala vestibuli and the scala tympani, to the round window, where it induces movement of the secondary tympanic membrane. This results in the movement of the endolymph of the cochlear duct, causing pressure on the tectorial membrane, which then induces pressure on the sensory hairs, stimulating the receptor cells within the cochlear duct to send impulses to the spiral ganglion. The axons of the spiral ganglion form part of the vestibulocochlear nerve.
===The Outer and Middle Ear===
===The Outer and Middle Ear===
*Sound is transmitted from the tympanic membrane to the oval window, via first of all the ossicles (malleus, incus, stapes), then the middle ear wall, then the middle ear cavity:
*Sound is transmitted from the tympanic membrane to the oval window, via first of all the ossicles (malleus, incus, stapes), then the middle ear wall, then the middle ear cavity: