NSG 500 EXAM 3 Advanced Health Assessment
Questions and Answers| Updated| Pass Guaranteed|
Wilkes University
1. Which cranial nerve is tested by asking the patient to identify familiar scents
such as coffee, with each nostril tested separately?
A. CN II (optic)
B. CN I (olfactory)
C. CN V (trigeminal)
D. CN VII (facial)
Answer: B. CN I (olfactory)
Rationale: CN I is purely sensory for smell. Strong irritants such as ammonia
should be avoided because they stimulate CN V.
2. Which tests are used to assess CN II?
A. Visual acuity, visual fields, and funduscopic examination
B. Pupil dilation only
C. Extraocular movements
D. Corneal reflex
Answer: A. Visual acuity, visual fields, and funduscopic examination
Rationale: The optic nerve carries visual information. Acuity is tested with the
Snellen chart and fields by confrontation.
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,3. Which cranial nerves control extraocular movements?
A. II, III, and V
B. V, VII, and IX
C. IX, X, and XI
D. III, IV, and VI
Answer: D. III, IV, and VI
Rationale: CN III (oculomotor), CN IV (trochlear), and CN VI (abducens) move the
eyes. The six cardinal fields of gaze test them.
4. Which muscle does CN VI innervate, and what movement does it produce?
A. Superior oblique; downward and inward movement
B. Medial rectus; adduction
C. Lateral rectus; abduction of the eye
D. Levator palpebrae; lid elevation
Answer: C. Lateral rectus; abduction of the eye
Rationale: CN VI (abducens) moves the eye laterally. CN IV supplies the superior
oblique, and CN III supplies the remaining extraocular muscles.
5. A patient has a drooping eyelid, a dilated pupil, and the eye deviated 'down
and out.' Which nerve is affected?
A. CN IV
B. CN III
C. CN VI
D. CN VII
Answer: B. CN III
Rationale: Oculomotor palsy causes ptosis, mydriasis, and unopposed lateral
rectus and superior oblique action.
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,6. Which cranial nerve is responsible for constriction of the pupil in response to
light?
A. CN III (efferent limb), with CN II as the afferent limb
B. CN IV
C. CN V
D. CN VI
Answer: A. CN III (efferent limb), with CN II as the afferent limb
Rationale: Light is sensed by CN II and the response is carried by parasympathetic
fibers in CN III.
7. The motor component of CN V (trigeminal) is tested by:
A. Having the patient shrug
B. Having the patient smile
C. Asking the patient to stick out the tongue
D. Asking the patient to clench the teeth while palpating the masseter and
temporalis muscles
Answer: D. Asking the patient to clench the teeth while palpating the masseter
and temporalis muscles
Rationale: The motor branch innervates the muscles of mastication.
8. Which are the three sensory divisions of CN V?
A. Frontal, nasal, and chin
B. Optic, auditory, and lingual
C. Ophthalmic, maxillary, and mandibular
D. Superior, middle, and inferior
Answer: C. Ophthalmic, maxillary, and mandibular
Rationale: The face is tested for light touch and pain over the forehead, cheeks,
and jaw.
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, 9. The corneal reflex involves which cranial nerves?
A. CN II and III
B. CN V (afferent) and CN VII (efferent)
C. CN IX and X
D. CN XI and XII
Answer: B. CN V (afferent) and CN VII (efferent)
Rationale: Touching the cornea with a wisp of cotton causes bilateral blinking; the
trigeminal nerve senses it and the facial nerve closes the eyelids.
10. CN VII is tested by asking the patient to:
A. Smile, raise the eyebrows, and puff out the cheeks
B. Shrug the shoulders
C. Say 'ahh'
D. Follow a moving finger
Answer: A. Smile, raise the eyebrows, and puff out the cheeks
Rationale: The facial nerve controls the muscles of facial expression and taste on
the anterior two thirds of the tongue.
11. Which cranial nerve provides taste to the anterior two thirds of the tongue?
A. CN IX
B. CN X
C. CN XII
D. CN VII
Answer: D. CN VII
Rationale: CN IX provides taste to the posterior third of the tongue.
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Questions and Answers| Updated| Pass Guaranteed|
Wilkes University
1. Which cranial nerve is tested by asking the patient to identify familiar scents
such as coffee, with each nostril tested separately?
A. CN II (optic)
B. CN I (olfactory)
C. CN V (trigeminal)
D. CN VII (facial)
Answer: B. CN I (olfactory)
Rationale: CN I is purely sensory for smell. Strong irritants such as ammonia
should be avoided because they stimulate CN V.
2. Which tests are used to assess CN II?
A. Visual acuity, visual fields, and funduscopic examination
B. Pupil dilation only
C. Extraocular movements
D. Corneal reflex
Answer: A. Visual acuity, visual fields, and funduscopic examination
Rationale: The optic nerve carries visual information. Acuity is tested with the
Snellen chart and fields by confrontation.
Page 1
,3. Which cranial nerves control extraocular movements?
A. II, III, and V
B. V, VII, and IX
C. IX, X, and XI
D. III, IV, and VI
Answer: D. III, IV, and VI
Rationale: CN III (oculomotor), CN IV (trochlear), and CN VI (abducens) move the
eyes. The six cardinal fields of gaze test them.
4. Which muscle does CN VI innervate, and what movement does it produce?
A. Superior oblique; downward and inward movement
B. Medial rectus; adduction
C. Lateral rectus; abduction of the eye
D. Levator palpebrae; lid elevation
Answer: C. Lateral rectus; abduction of the eye
Rationale: CN VI (abducens) moves the eye laterally. CN IV supplies the superior
oblique, and CN III supplies the remaining extraocular muscles.
5. A patient has a drooping eyelid, a dilated pupil, and the eye deviated 'down
and out.' Which nerve is affected?
A. CN IV
B. CN III
C. CN VI
D. CN VII
Answer: B. CN III
Rationale: Oculomotor palsy causes ptosis, mydriasis, and unopposed lateral
rectus and superior oblique action.
Page 2
,6. Which cranial nerve is responsible for constriction of the pupil in response to
light?
A. CN III (efferent limb), with CN II as the afferent limb
B. CN IV
C. CN V
D. CN VI
Answer: A. CN III (efferent limb), with CN II as the afferent limb
Rationale: Light is sensed by CN II and the response is carried by parasympathetic
fibers in CN III.
7. The motor component of CN V (trigeminal) is tested by:
A. Having the patient shrug
B. Having the patient smile
C. Asking the patient to stick out the tongue
D. Asking the patient to clench the teeth while palpating the masseter and
temporalis muscles
Answer: D. Asking the patient to clench the teeth while palpating the masseter
and temporalis muscles
Rationale: The motor branch innervates the muscles of mastication.
8. Which are the three sensory divisions of CN V?
A. Frontal, nasal, and chin
B. Optic, auditory, and lingual
C. Ophthalmic, maxillary, and mandibular
D. Superior, middle, and inferior
Answer: C. Ophthalmic, maxillary, and mandibular
Rationale: The face is tested for light touch and pain over the forehead, cheeks,
and jaw.
Page 3
, 9. The corneal reflex involves which cranial nerves?
A. CN II and III
B. CN V (afferent) and CN VII (efferent)
C. CN IX and X
D. CN XI and XII
Answer: B. CN V (afferent) and CN VII (efferent)
Rationale: Touching the cornea with a wisp of cotton causes bilateral blinking; the
trigeminal nerve senses it and the facial nerve closes the eyelids.
10. CN VII is tested by asking the patient to:
A. Smile, raise the eyebrows, and puff out the cheeks
B. Shrug the shoulders
C. Say 'ahh'
D. Follow a moving finger
Answer: A. Smile, raise the eyebrows, and puff out the cheeks
Rationale: The facial nerve controls the muscles of facial expression and taste on
the anterior two thirds of the tongue.
11. Which cranial nerve provides taste to the anterior two thirds of the tongue?
A. CN IX
B. CN X
C. CN XII
D. CN VII
Answer: D. CN VII
Rationale: CN IX provides taste to the posterior third of the tongue.
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