Question

Which of the following is true of the neurons of the cochlear nerve?

1) Inner hair cells provide input to nearly 95 percent of the axons of the cochlear nerve.
2) The cell bodies of these neurons are located within the ventral medulla.
3) These neurons carry signals generated by the outer hair cells.
4) These nerve cells are hyperpolarized by release of transmitter from the hair cells.
5) The cochlear nerve projects directly to the primary auditory cortex.

Answer 1

The cochlear nerve carries auditory information to the brain, with input from the inner hair cells. The cell bodies of these neurons are located within the cochlea. The cochlear nerve projects to the primary auditory cortex in the temporal lobe.

Step-by-step explanation:

The cochlear nerve carries auditory information to the brain. The inner hair cells, not the outer hair cells, provide input to nearly 95 percent of the axons of the cochlear nerve.

The cell bodies of these neurons are located within the cochlea, not in the ventral medulla. These neurons carry signals generated by the inner hair cells, not the outer hair cells. When the hair cells bend, they release an excitatory neurotransmitter, which results in depolarization or excitation of the cochlear nerve cells.

The cochlear nerve projects from the cochlea to the primary auditory cortex in the temporal lobe.