Image: Scanning electron micrographs of the normal (a) and damaged (b) cochlear sensory epithelium. In the normal cochlea, the stereo cilia of a single row of inner hair cells (IHCs) and three rows of outer hair cells (OHCs) are present in an orderly array. In the damaged cochlea, hair cells are missing, and stereo cilia are abnormal, leading to hearing loss.
Micrographs are courtesy of Elizabeth M. Keithley. Retired Professor Emeritus of Surgery Auditory Research.