Auditory system facts for kids
Structure of the ear
The outer ear is the folds of cartilage surrounding the ear canal. They are called the pinna.
Sound waves travelling through the ear canal will hit the tympanum, or eardrum. The malleus (hammer), incus (anvil) and stapes (stirrup). These bones 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.
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Auditory system Facts for Kids. Kiddle Encyclopedia.