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Cranial Nerve Function

Cranial Nerve Fight
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There are 12 cranial nerves, which have nuclei located in the tegmentum of the brain stem. These nerves classified as either sensory, motor, or both.

12 KEY FACTS
SENSORY
CN I
Number (1) Foam-finger and Nose

CN I, the olfactory nerve, relays smell.

CN II
(2) Tutu with Optics

Cranial nerve II, the optic nerve, conveys sight.

CN VIII
(8) Ball Headphones

Cranial nerve VIII, the vestibulocochlear nerve, propagates the sensation of sound, but also helps sense balance.

MOTOR
CN III
(3) Trident with Eye

Cranial nerve III, the oculomotor nerve, helps the eye move, while allowing pupillary constriction, accommodation, as well as eyelid opening.

CN IV
(4)x4 Truck

Cranial nerve IV, the trochlear nerve, innervates the superior oblique muscle, helping the eye rotate medially.

CN VI
Mr. (6) Pack

The abducens nerve, CN VI, innervates the lateral rectus. This helps the eye abduct and move laterally.

CN XI
(11) Wheelchair

The accessory nerve, CN XI, which helps the motor functions of shoulder shrugging (trapezius muscle) and head turning (sternocleidomastoid muscle).

CN XII
V(12) Motor on Hippo-glass

CN XII, the hypoglossal nerve, allows tongue movement.

BOTH
CN V
(5) Face

The trigeminal nerve, CN V, conveys facial sensation and anterior tongue somatosensation. It also has motor function to allow mastication.

CN VII
(7) Facial-lotion

The facial nerve, CN VII, conveys the sensation of taste from the anterior tongue. It also has motor functions of facial movement, eyelid closing, movement of the stapedius muscle, lacrimation and salivation.

CN IX
(9) Lollipop

The glossopharyngeal nerve, CN IX, conveys the sensation of taste from the posterior tongue, and senses carotid pressure. It has the motor functions of allowing swallowing and innervating the stylopharyngeus muscle.

CN X
Vegas (10) Sign

The vagus nerve, CN X, senses taste from the epiglottis and monitors aortic arch receptors. It has motor functions of allowing swallowing, soft palate elevation, talking and coughing.

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