Which structure turns sound waves into mechanical vibrations?

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Multiple Choice

Which structure turns sound waves into mechanical vibrations?

Explanation:
The tympanic membrane converts sound waves into mechanical vibrations. When air pressure changes from sound waves reach this thin, flexible membrane, it vibrates in response. Those vibrations provide the mechanical energy that then drives the tiny middle-ear bones, amplifying and transmitting the signal onward. The other parts have different roles: the pinna mainly collects and helps localize sound, the external auditory canal simply channels sound to the eardrum, and the middle ear houses the bones that transmit and amplify the vibration but does not perform the initial conversion itself.

The tympanic membrane converts sound waves into mechanical vibrations. When air pressure changes from sound waves reach this thin, flexible membrane, it vibrates in response. Those vibrations provide the mechanical energy that then drives the tiny middle-ear bones, amplifying and transmitting the signal onward. The other parts have different roles: the pinna mainly collects and helps localize sound, the external auditory canal simply channels sound to the eardrum, and the middle ear houses the bones that transmit and amplify the vibration but does not perform the initial conversion itself.

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