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# Nerve

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A nerve fiber is a collection of both myelinated and unmyelinated dendrites and axons of neurons. A nerve is a group of nerve fibers.

Cranial nerves are originated from brainstem? and they mainly control the functions of the anatomic structures of the head. There are 12 pairs of cranial nerves:

- olfactory
- optic
- oculomotor
- trochlear
- trigeminal
- abducent
- facial
- vestibulo-cochlear
- glossopharyngeal
- vagus
- accessory
- hypoglossal

Spinal nerves take their origins from the [spinal cord]?. They control the functions of the rest of the body. There are 31 pairs of spinal nerves: 8 cervical, 12 thoracic, 5 lumbar, 5 sacral and 1 coccygeal.

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Last edited May 27, 2001 5:31 pm (diff)
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