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1 ) pinna - collects sounds and tunnels them in to the auditory canal 2 ) Auditory canal - connects the outer war with the eardrum 3 ) Eardrum - the beginning of the middle ear and is made of a thin sheet of muscle and skin that vibrates in response to sounds . Vibrations are passed to the Ossicles 4 ) Earcanal - the narrow passage through which sound enyewts into the ear
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