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The Social Security System

question 87

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The Social Security system:


Definitions:

Tympanic Membrane

Also known as the eardrum, a thin membrane that divides the external ear from the middle ear and vibrates in response to sound waves.

Internal Auditory Meatus

A canal in the temporal bone of the skull, through which the facial and vestibulocochlear nerves travel to the inner ear.

Oval Window

A membrane-covered opening that leads from the middle ear to the vestibule of the inner ear and is involved in transmitting sound vibrations.

Timbre

The quality of a musical note or sound that distinguishes different types of sound production, such as voices or musical instruments.

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