Hair cell:

a hair cell.

receptor cells found in the auditory and vestibular systems. Hair cells have hair-like appendages called stereocilia that extend from the top of the cells. When stereocilia are deflected in response to movement of a hair cell, it results in the opening of ion channels and depolarization of the cell.

Read more: Know your brain - Cochlea

Watch this 2-Minute Neuroscience video to learn more about hair cells in the cochlea.