After Reaching the Inner Ear,the Frequency of a Sound Primarily

Question

After reaching the inner ear,the frequency of a sound primarily affects
A)the amplitude of basilar membrane vibration.
B)the location of the greatest basilar membrane vibration.
C)the vibrational amplitude of the tectorial membrane.

Accepted Answer

After reaching the inner ear, the frequency of a sound primarily affects the location of the greatest basilar membrane vibration, which stimulates hair cells in specific regions and leads to the perception of different pitches. The basilar membrane is stiff and narrow at the base, responding best to high frequencies, and becomes wider and more flexible towards the apex, responding better to low frequencies.