Question

The nerve that carries messages to brain from the eyes is

• A. Optic nerve
• B. Auditory nerve
• C. Motor nerve
• D. Sensory nerve

Answer 1

The correct option is A Optic nerve

Optic nerve consists of ganglion cell fibres from the innermost layer of the retina and serves to transmit the impulse from medial and lateral halves of the same eye to brain.

Auditory nerve receives axons of neurons that being around organ of Corti and transmits the auditory information from the cochlea to brain. According to their function, all nerve fibres are categorized as sensory or motor neurons. Sensory nerves receive sensory inputs from an internal and external environment and transmit it to CNS (brain and spinal cord) for processing. Only optic nerve, not all sensory nerves, carries information from eyes to brain.

Motor nerves transmit the nerve impulses from CNS to effectors (muscles and glands).

Therefore, the correct answer is option A.