How The Ear Works
There are three main parts of the ear: the outer, middle, and inner ear. The outer ear is the part that you can see that includes the ear canal. The eardrum (tympanic membrane) separates the outer ear from the middle ear.
There are three small bones called ossicles, in the middle ear. These ossicles help transfer sound to the inner ear. The inner ear contains the hearing (auditory) nerve that leads to the brain. Any source of sound sends vibrations or sound waves into the air. These funnel through the ear opening, down the ear canal, and strike the eardrum, causing it to vibrate. These vibrations are passed to the small bones of the middle ear, which are then transmitted to the hearing nerve in the inner ear. Here, the vibrations become nerve impulses and go directly to the brain, which interprets the impulses as sounds.