Cranial Nerves Flashcards

1
Q

Cranial Nerve V

A

Trigeminal Nerve (ophthalmic, maxillary, mandibular)
Sensory and motor nerve
Bilaterally innervated

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2
Q

Unilateral damage to cranial nerve V will cause:

A

The jaw to deviate towards the affected side when the mouth is closed

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3
Q

Bilateral damage to cranial nerve V may result

A
In an inability to close mouth and difficulty chewing
Trigeminal neuralgia (sharp pain in the facial area)
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4
Q

Cranial Nerve VII

A

Facial Nerve
Mixed nerve (sensory and motor)
Sensory responsible for taste in anterior 2/3 of tongue
Motor innervate muscles important to facial expressions and speech

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5
Q

Cranial Nerve IX

A

Glossopharyngeal Nerve
Mixed nerve
Sensory: taste posterior 1/3 of tongue; faucial pillars, tonsils, soft palate, pharynx
Motor: stylopharyngues, pharyngeal plexus (upper pharyngeal muscles)

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6
Q

Lesions to Cranial Nerve IX

A

Lesions cause difficulty swallowing, unilateral loss of gag reflex, loss of taste posterior 1/3 tongue

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7
Q

Cranial Nerve X

A

Vagus Nerve
Mixed
Motor: pharynx and larynx
Sensory: lower pharynx, larynx, epiglottis

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8
Q

Cranial Nerve XI

A

Spinal Accessory Nerve
Supplies trapezius and sternocleidomastoid muscles
Innervate muscles for soft palate

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9
Q

Cranial Nerve XII

A

Hypoglossal Nerve
Motor nerve that runs under the tongue
Supplies all intrinsic and extrinsic tongue muscles (except for palatoglossus)

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