How Does Hearing Work?
Hearing is an important sense to your everyday life.
The Outer Ear
Sound is transmitted through the air as sound waves from the environment. The sound waves are gathered by the outer ear and sent down the ear canal to the eardrum.
The sound waves cause the eardrum to vibrate, which sets the three tiny bones in the middle ear into motion.
The Inner Ear
The motion of the three bones causes the fluid in the inner ear, or cochlea, to move.
The Hair Cells
The movement of the fluid in the inner ear causes the hair cells in the cochlea to bend. The hair cells change the movement into electrical impulses.
The Auditory Nerve
These electrical impulses are transmitted to the auditory nerve and up to the brain, where they are interpreted as sound.
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