What is the role of eardrum in the mechanism of hearing?
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It collects sound waves and channels them into the ear canal (external auditory meatus), where the sound is amplified. The sound waves then travel toward a flexible, oval membrane at the end of the ear canal called the eardrum, or tympanic membrane. Sound waves cause the eardrum to vibrate.
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Hearing starts with the outer ear.
When a sound is made outside the outer ear, the sound waves, or vibrations, travel down the external auditory canal and strike the eardrum (tympanic membrane).
The eardrum vibrates. The vibrations are then passed to 3 tiny bones in the middle ear called the ossicles.
it increases the efficiency of sound waves.
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