The amount of depolarization that occurs in a sound-receptor cell is proportional to the volume (loudness)of the sound.

Question

Quizplus · Accepted Answer

This statement is true. The depolarization of a sound-receptor cell (such as a hair cell in the cochlea) occurs when sound waves cause the stereocilia on the cell to bend, which opens ion channels and allows ions to flow into the cell, causing a change in electrical potential. The amount of bending (and therefore ion flow) is proportional to the volume (loudness) of the sound, so depolarization increases with increasing volume.

The Amount of Depolarization That Occurs in a Sound-Receptor Cell