Question

How many pairs of cranial nerves originate from the brain of rat?

• A. 12
• B. 8
• C. 9
• D. 11
• E. 10

Answer 1

Answer: (A)

12

There are total 12 pairs of cranial nerves, that originate from mammalian brain and brain stem. Each of them carries different functions related to different senses of the body. Olfactory nerve (CN I); optic nerve (CN II); oculomotor nerve (CN III); trochlear nerve (CN IV); trigeminal nerve (CN V); abducens nerve (CN VI); facial nerve (CN VII); auditory (or vestibulocochlear) nerve (CN VIII); glossopharyngeal nerve (CN IX); vagus nerve (CN X); spinal accessory nerve (CN XI); hypoglossal nerve (CN XII).