Saturday, November 29, 2008

A Quick Review of the 12 Cranial Nerves



1st -Olfactory nerve - relays smell

2nd - Optic nerve - transmits visual information

3rd - Oculomotor nerve - supplies external muscles of the eyeball with motor and sensory fibers

4th - Trochlear nerve - also supplies external muscles of the eyeball with motor and sensory fibers

5th - Trigeminal nerve - supplies muscles concerned with chewing and relays sensations from the face

6th -Abducent nerve - concerned with lateral eye movement and blinking

7th - Facial nerve - controls the muscles of facial expression, serves the taste buds on the front two-thirds of the tongue, and sensation to the skin of the fingers and toes

8th - Auditory nerve - concerned with hearing and balance

9th - Glossopharyngeal nerve - carries sensation and taste from the back of the tongue and throat; helps control swallowing

10th - Vagus nerve - carries both sensory and motor connections to many organs in the chest and abdomen

11th - Accessory nerve - supplies two neck muscles, the sternomastoid and the trapezius

12th - Hypoglossal nerve - supplies the muscles of the tongue and some of the small muscles of the neck

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