Correct Answer: C
Explanation:
In the CNS the majority of nerve cell bodies are found in the grey matter. The myelin sheath of CNS axons is formed by oligodendrocytes, hence A and B options are wrong.
Cranial Nerve: Major Functions:
I Olfactory smell
II Optic vision
III Oculomotor eyelid and eyeball movement
IV Trochlear innervates superior oblique turns eye downward and laterally
V Trigeminal chewing face & mouth touch & pain
VI Abducens turns eye laterally
VII Facial controls most facial expressions secretion of tears & saliva taste
VIII Vestibulocochlear
(auditory) hearing
equillibrium sensation
IX Glossopharyngeal taste senses carotid blood pressure
X Vagus senses aortic blood pressure slows heart rate stimulates digestive organs taste
XI Spinal Accessory controls trapezius & sternocleidomastoid controls swallowing movements
XII Hypoglossal controls tongue movements