Definition of cocaine. : a bitter crystalline alkaloid C17H21NO4 obtained from coca leaves that is used especially in the form of its hydrochloride medically as a topical anesthetic and illicitly for its euphoric effects and that may result in a compulsive psychological need.
The inner hair cells transform the sound vibrations in the fluids of the cochlea into electrical signals that are then relayed via the auditory nerve to the auditory brainstem and to the auditory cortex.
The inner ear is the cochlea, which contains the auditory sensory receptors, called hair cells The cochlea is filled with fluid Floating the middle of the fluid is the basilar membrane The hair cells are embedded in a part of the membrane called the organ of Corti When the oval window vibrates a second membrane within the cochlea, the round window, bulges, causing the basilar membrane to b end and stimulates the hair cells to produce AP Basilar Membrane Higher sound frequencies cause maximum ...