Eardrum - Change sound wave into vibration, Pinna - Collect sound wave, Auditory canal - Direct sound wave to the eardrum, Ossicles - Amplify (magnify) the vibrations, Cochlea - Change vibration into impulses, Auditory nerve - Send nerve impulses to the brain, Eustachian tube - Equalizes the air pressure of the ear, Semicircular canal - Control body balance, Semicircular canal - People who get seasick easily due to sensitive ..., Eardrum - Elder people will have weaker hearing due to less elastic ... , Cochlea - Structure in the inner ear that filled with liquid,

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