Answer
These are outer hair cells; they enable the cochlea to differentiate between sounds of different pitches.
Work Step by Step
The inner and outer hair cells exist in the cochlea around the organ of Corti. The inner hair cells are sensory auditory cells, The outer hair cells, however, derive from motor neurons; their function is to increase the sensitivity of the cochlea to soft sounds. In addition, they enable the cochlea to differentiate between the pitches of sounds, based on frequencies of their sound waves,
