The brain interprets sound after which of the following sequential events?
I-As the basilar membrane vibrates,the cilia of the hair cells bend in response to its movement relative to the tectorial membrane,the bending of the cilia depolarizes the hair cells.
II-The hair cells stimulate the production of action potentials in sensory neurons that are projected to the brain.
III-The axons of ganglion cells transmit action potentials to the occipital lobe of the brain.
A)II then I
B)III then I then II
C)III then I
D)I then II
E)I then II then III

Question

Quizplus · Accepted Answer

The brain interprets sound after the hair cells depolarize and stimulate the production of action potentials in sensory neurons that are projected to the brain (II) and the axons of ganglion cells transmit action potentials to the brain (III). The initial step of basilar membrane vibration and cilia bending (I) is necessary for the hair cells to depolarize, but it does not directly contribute to the brain's interpretation of sound. Therefore, the correct sequence is I then II.

The Brain Interprets Sound After Which of the Following Sequential