Do We Hear?
When sound approaches the human ear, it first hits the Pinna which is most commonly known as the outer ear. Then it starts traveling down the external auditory meatus which is more commonly known as the ear canal. Then it hits the tympanic membrane or the ear drum. When the tympanic membrane starts vibrating, the three bones, malleus, incus, and stapes start vibrating. When the stapes vibrates, the cochlea starts vibrating. Then the auditory nerve picks of the vibrations and carries them to the brain where they are analyzed.