Cranial Nerves

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The patient has the following symptoms: change in vocal tone, problems swallowing, inability to control urination, erratic heart rate, and gastric problems. You would identify the problem as being related to the

vagus nerve.

Difficulty in swallowing may be a sign of damage to which cranial nerve(s)?

glossopharyngeal and vagus

Which sensation(s) does the vestibulocochlear nerve carry?

hearing and equilibrium

A patient develops a tumor of a cranial nerve that leads to difficulty in speaking from a loss of tongue movement. Which cranial nerve is affected?

hypoglossal

Which of the following symptoms would you associate with damage to the spinal accessory nerve?

weakness of the sternocleidomastoid muscle

The optic nerve crosses at the

optic chiasm

You suspect your friend has damage to cranial nerve I when he is unable to

smell his food

The cranial nerve that has three major branches is the

trigeminal

Swallowing, speech, regulation of viscera (organs)

Nerve X

Motor only head, neck, and shouldere movements

Nerve XI

Tongue movements for food manipulation and swallowing

Nerve XII

Trigeminal Nerve

V

Abducens Nerve

VI

Facial Nerve

VII

Vestibulochochlear Nerve

VIII

Motor to eye, moves eye down/ medially

Nerve IV

Swallowing, salivation, gagging, control of blood pressure

Nerve IX

Sensory to face: touch, pain, temperature Motor: muscles of mastication

Nerve V

Motor to eye, abducts/ laterally roatets

Nerve VI

Sensory: taste Motor: muscles of the face

Nerve VII

equilibrium and hearing

Nerve VIII

Olfactory Nerve

I

Optic Nerve

II

Oculomotor Nerve

III

The cranial nerves that innervate the eye muscles are

III, IV, and VI.

Trochlear Nerve

IV

Glossopharyngeal Nerve

IX

Smell and has sensory fibers only

Nerve I

Vision, damage causes blindness, has sensory fibers only

Nerve II

Motor to eye, open eyelids and helps to focus.

Nerve III

Vagus Nerve

X

Which of the cranial nerves is named for the fact that it "wanders," that is, innervates structures throughout the thorax and abdomen?

X

Accessory Nerve

XI

Hypoglossal Nerve

XII

Sensory innervation of the lower teeth and gums is by the ________ nerve.

mandibular branch of the trigeminal


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