Medical Assistant Prep / Unit 3 MAS 063 short lesson, about 20 seconds
Nerves of the Head and Body
Captions available
The idea
Twelve pairs of cranial nerves leave the brain, and thirty-one pairs of spinal nerves leave the spinal cord.
In practice
Cranial nerves serve mainly the head, neck and face and are numbered in Roman numerals; each spinal nerve pair matches a segment of the cord.
Where people slip
The eighth cranial nerve carries hearing and balance, so it comes up again with the ear.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Unlocks
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