Explain briefly how we can 'hear' our ears.
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The movement of the inner ear fluid causes the hair cells in the cochlea to bend. The hair cells change the movement into electrical pluses. These electrical impulses are transmitted to the hearing (auditory) nerve and up to the brain, where they are interpreted as sound.
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Sound waves enter the outer ear and travel through a narrow passageway called the ear canal, which leads to the eardrum.
The eardrum vibrates from the incoming sound waves and sends these vibrations to three tiny bones in the middle ear.
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