INSTRUCTIONS Wrapping your head around cranial nerves
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Wrapping your head around cranial nerves
GENERAL PURPOSE To provide nurses with an overview of the cranial nerves. LEARNING OBJECTIVES After reading the preceding article and taking this test, you should be able to: 1. Identify the 12 pairs of cranial nerves. 2. Describe assessment of each cranial nerve. 3. List signs and symptoms of cranial nerve dysfunction.
1. Which of the following accurately names one of the cranial nerves?
a. I-optic
b. II-olfactory
c. III-oculomotor
d. IV-trigeminal
2. Olfactory hallucinations are a common symptom of
a. a head injury.
b. temporal epilepsy.
c. nasal obstruction.
d. chronic rhinitis.
3. Which statement is correct about the optic nerve?
a. It's assessed in part by using a Snellen chart.
b. It's cranial nerve III.
c. It's responsible for downward, internal rotation of the eye.
d. It's assessed with a wisp of cotton gently touching the cornea.
4. Which is correct about testing a patient's visual acuity with a Snellen chart?
a. Ask him to cover one eye with his hand.
b. Have him stand 14 feet away from the chart.
c. Never coax him to improve performance.
d. Document if he wore corrective lenses.
5. Cranial nerves III, IV, and VI work together to control
a. swallowing.
b. extraocular movements.
c. balance.
d. facial movements.
6. A sign of complete oculomotor nerve palsy is a
a. dilated, nonreactive pupil.
b. constricted, nonreactive pupil.
c. dilated, reactive pupil.
d. constricted, reactive pupil.
7. The patient with ptosis may
a. have one-third of his iris covered by the upper eyelid.
b. tilt his head to eliminate double vision.
c. constantly blink.
d. need an eye lubricant.
8. Which wouldn't be used to test the trigeminal nerve?
a. Have the patient clench his teeth while you palpate the temporal muscles.
b. Touch the cornea with a wisp of cotton.
c. Have the patient raise both eyebrows and watch for symmetry.
d. Have the patient identify when you touch his face with a cotton wisp.
9. Which nerve controls the muscles of mastication as well as the three sensory divisions of the face?
a. trigeminal
b. facial
c. abducens
d. glossopharyngeal
10. Which statement isn't correct about trigeminal neuralgia?
a. It's characterized by severe intermittent facial pain.
b. It usually occurs in adults who are middle-aged and older.
c. It's more common in men.
d. Pain can recur hundreds of times a day.
11. Drugs recommended for trigeminal neuralgia include antiepileptic drugs and
a. corticosteroids.
b. tricyclic antidepressants.
c. opioids.
d. nonopioid analgesics.
12. Teach patients with trigeminal sensory nerve dysfunction to
a. use an eye lubricant regularly.
b. check their BP daily.
c. have regular hearing tests.
d. have regular dental checkups.
13. Cranial nerve VII (the facial nerve) is responsible for
a. bitter taste on the posterior third of the tongue.
b. the direct light reflex.
c. taste on the anterior two-thirds of the tongue.
d. tongue movements.
14. Which statement isn't correct about Bell's palsy?
a. It may involve facial nerve inflammation from a viral infection.
b. Facial weakness is usually the first symptom.
c. Serious cases can be treated with acyclovir and prednisone.
d. Without treatment, most patients recover fully in 3 to 6 months.
15. The acoustic nerve controls hearing and
a. articulation.
b. facial movements.
c. tongue movements.
d. balance.
16. Spinal accessory nerve dysfunction can cause atrophy of which muscle?
a. trapezius
b. masseter
c. temporal
d. deltoid
17. Assess the hypoglossal nerve by asking the patient to
a. say "Ah" while you observe movement of the uvula.
b. move his tongue side to side.
c. identify a sweet taste on his anterior tongue.
d. open his mouth while you gently stimulate the back of his pharynx.
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