In the process of hearing, which action directly stimulates nerve impulses along the cochlear nerve?
A) The vibration of the stapes against the oval window
B) Sound waves striking the tympanic membrane
C) Ripples in the perilymph striking the round window
D) Ripples in the perilymph over the hairs of the organ of Corti

Question

Quizplus · Accepted Answer

The ripples in the perilymph over the hairs of the organ of Corti directly stimulate the hair cells, which in turn generate nerve impulses along the cochlear nerve. The other options describe the initial steps in the process of hearing but do not directly stimulate the nerve impulses along the cochlear nerve.

In the Process of Hearing, Which Action Directly Stimulates Nerve