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Structure of the ear
Sound waves travelling through the ear canal will hit the tympanum, or eardrum. Three tiny bones, the ossicles, convert the waves to high pressure vibrations. They are then converted to nerve impulses in the cochlea.
The inner ear is made mostly of the cochlea. The cochlea is made up of three pieces, and is filled with liquid. It transforms sound waves to electric signals in neurons. The semicircular canals of the inner ear are used in equilibrioception, the sense of balance.