How does this sense work?

1.) Sound waves enter the outer ear and travel through a passageway, the ear canal, which leads to the eardrum.

2.) The eardrum vibrates from the sound waves and sends the vibrations to three bones in the middle ear, the malleus, incus, and stapes.

3.) The bones of the middle ear take the sounds and change them from air to fluid vibrations in the cochlea of the inner ear. The cochlea is split into an upper and lower part. Once the vibrations cause the fluid inside the cochlea to ripple, a wave forms along the basilar membrane. Hair cells ride the wave.

4.) when the hair cells move up and down, microscopic hair like projections that are perched on top of hair cells bump against a structure and bend. Bending causes pre like channels to open up. When that happens chemicals rush into the cells, and creates a electric signal.

5.) The auditory nerve carries the electrical signal to the brain, which then turns into sound.