I have given a figure of the development of a posterior root of a cranial nerve in fig.
cranial nerve n.
Any of 12 pairs of nerves that emerge from or enter the brain, comprising the olfactory (I), optic (II), oculomotor (III), trochlear (IV), trigeminal (V), abducent (VI), facial (VII), vestibulocochlear (VIII), glossopharyngeal (IX), vagus (X), accessory (XI), and hypoglossal (XII) nerves.
|cranial nerve |
Any of the 12 pairs of nerves in humans and other mammals that connect the muscles and sensory organs of the head and upper chest directly to the brain through openings in the skull. The cranial nerves include the optic nerve and the auditory nerve.