Which nerve transmits the cochlea's nerve impulses to the brain?

Which nerve transmits the cochlea's nerve impulses to the brain?

• A. Auditory nerve
• B. Optic nerve
• C. Olfactory nerve
• D. Trigeminal nerve

Answer: (A)

The nerve that carries signals from the cochlea to the brain is the auditory nerve. When sound enters the inner ear, hair cells in the cochlea convert mechanical vibrations into electrical signals. Those signals travel along the nerve fibers of the cochlear nerve, which is the hearing portion of the vestibulocochlear nerve, and are transmitted up to the brain where they are interpreted as sound. The other nerves listed have entirely different roles: the optic nerve carries vision, the olfactory nerve carries smell, and the trigeminal nerve handles facial sensation and mastication, not hearing.

The nerve that carries signals from the cochlea to the brain is the auditory nerve. When sound enters the inner ear, hair cells in the cochlea convert mechanical vibrations into electrical signals. Those signals travel along the nerve fibers of the cochlear nerve, which is the hearing portion of the vestibulocochlear nerve, and are transmitted up to the brain where they are interpreted as sound. The other nerves listed have entirely different roles: the optic nerve carries vision, the olfactory nerve carries smell, and the trigeminal nerve handles facial sensation and mastication, not hearing.