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The eardrum vibrates when sound waves are funneled into the auditory canal. These vibrations are subsequently transferred to the ossicles to continue the hearing process.

Tympanic Membrane (Eardrum)

A patient experiences a significant thickening and stiffening of the thin membrane that separates the outer ear canal from the middle ear. Based on the primary function of this structure, what is the most immediate and direct impact on their hearing?

The ossicles are structures that move in response to vibrations from the eardrum. As they move, the stapes presses against the oval window of the cochlea.

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