BARKLEY PMHNP 2026 Ultimate Exam Review: 150 High-Yield
Questions with Verified Answers (Psychiatric Mental Health Nurse
Practitioner Board)
1. What cranial nerve is responsible for smell?
A. Optic nerve
B. Trigeminal nerve
C. Facial nerve
D. Olfactory nerve
Rationale: The olfactory nerve (cranial nerve I) is responsible for the sense of smell.
2. What cranial nerve controls vision?
A. Oculomotor nerve
B. Optic nerve
C. Trochlear nerve
D. Abducens nerve
Rationale: The optic nerve (cranial nerve II) transmits visual information from the retina to the
brain.
3. What is the significance of lymph node size in assessment?
A. All enlarged lymph nodes are normal
B. Nodes smaller than 5 cm are insignificant
C. Lymph nodes <2 cm are usually insignificant, but >1 cm in the supraclavicular fossa is
significant
D. Tender nodes are always malignant
Rationale: Small lymph nodes are often benign, but enlargement in the supraclavicular area is
concerning for malignancy.
4. What is the function of the Olfactory nerve?
,A. Vision
B. Taste
C. Hearing
D. Smell
Rationale: Cranial nerve I (olfactory) is responsible for the sense of smell.
5. What is the primary function of the Optic nerve?
A. Eye movement
B. Eyelid elevation
C. Vision
D. Pupil constriction
Rationale: The optic nerve carries visual signals from the eye to the brain.
6. What does the Oculomotor nerve control?
A. Lateral eye movement
B. Downward eye movement
C. Facial expression
D. Opening eyelids
Rationale: The oculomotor nerve (cranial nerve III) controls eyelid elevation and most eye
movements.
7. What movement does the Trochlear nerve facilitate?
A. Lateral eye movement
B. Upward eye movement
C. Down and inward eye movement
D. Pupil dilation
,Rationale: The trochlear nerve (cranial nerve IV) controls the superior oblique muscle, allowing
downward and inward eye movement.
8. What are the functions of the Trigeminal nerve?
A. Hearing and balance
B. Facial movement
C. Tongue movement
D. Jaw muscle control and sensation on the face
Rationale: The trigeminal nerve (cranial nerve V) provides facial sensation and controls muscles
of mastication.
9. What is the role of the Abducens nerve?
A. Medial eye movement
B. Pupil constriction
C. Eyelid opening
D. Lateral eye movement
Rationale: The abducens nerve (cranial nerve VI) controls the lateral rectus muscle for outward
eye movement.
10. What does the Facial nerve control?
A. Tongue movement
B. Hearing
C. Swallowing
D. Movement of the face, saliva, and tear secretion
Rationale: The facial nerve (cranial nerve VII) controls facial expression and stimulates salivary
and lacrimal glands.
11. What is the CAGE questionnaire used for?
A. To assess depression severity
, B. To screen for alcohol use disorders
C. To diagnose bipolar disorder
D. To evaluate opioid withdrawal
Rationale: CAGE is a brief, 4-question screening tool for identifying potential alcohol problems.
12. What does the 'C' in CAGE stand for?
A. Cut down: Have you ever wanted to cut down on your drinking?
B. Consumption: How much alcohol do you consume daily?
C. Craving: Do you crave alcohol?
D. Control: Do you have control over your drinking?
Rationale: "Cut down" is the first question in the CAGE questionnaire.
13. What is the legal limit for blood alcohol concentration (BAC) for intoxication?
A. 50 mg/dL
B. 80–100 mg/dL
C. 120 mg/dL
D. 150 mg/dL
Rationale: Most legal systems set intoxication at ~0.08% BAC (80 mg/dL).
14. What is the treatment for alcohol withdrawal delirium?
A. Supportive care only
B. Medical emergency; often treated with benzodiazepines
C. Antipsychotics only
D. SSRIs
Rationale: Delirium tremens is life-threatening and requires urgent benzodiazepine therapy.
15. What are the symptoms of mild alcohol withdrawal?
Questions with Verified Answers (Psychiatric Mental Health Nurse
Practitioner Board)
1. What cranial nerve is responsible for smell?
A. Optic nerve
B. Trigeminal nerve
C. Facial nerve
D. Olfactory nerve
Rationale: The olfactory nerve (cranial nerve I) is responsible for the sense of smell.
2. What cranial nerve controls vision?
A. Oculomotor nerve
B. Optic nerve
C. Trochlear nerve
D. Abducens nerve
Rationale: The optic nerve (cranial nerve II) transmits visual information from the retina to the
brain.
3. What is the significance of lymph node size in assessment?
A. All enlarged lymph nodes are normal
B. Nodes smaller than 5 cm are insignificant
C. Lymph nodes <2 cm are usually insignificant, but >1 cm in the supraclavicular fossa is
significant
D. Tender nodes are always malignant
Rationale: Small lymph nodes are often benign, but enlargement in the supraclavicular area is
concerning for malignancy.
4. What is the function of the Olfactory nerve?
,A. Vision
B. Taste
C. Hearing
D. Smell
Rationale: Cranial nerve I (olfactory) is responsible for the sense of smell.
5. What is the primary function of the Optic nerve?
A. Eye movement
B. Eyelid elevation
C. Vision
D. Pupil constriction
Rationale: The optic nerve carries visual signals from the eye to the brain.
6. What does the Oculomotor nerve control?
A. Lateral eye movement
B. Downward eye movement
C. Facial expression
D. Opening eyelids
Rationale: The oculomotor nerve (cranial nerve III) controls eyelid elevation and most eye
movements.
7. What movement does the Trochlear nerve facilitate?
A. Lateral eye movement
B. Upward eye movement
C. Down and inward eye movement
D. Pupil dilation
,Rationale: The trochlear nerve (cranial nerve IV) controls the superior oblique muscle, allowing
downward and inward eye movement.
8. What are the functions of the Trigeminal nerve?
A. Hearing and balance
B. Facial movement
C. Tongue movement
D. Jaw muscle control and sensation on the face
Rationale: The trigeminal nerve (cranial nerve V) provides facial sensation and controls muscles
of mastication.
9. What is the role of the Abducens nerve?
A. Medial eye movement
B. Pupil constriction
C. Eyelid opening
D. Lateral eye movement
Rationale: The abducens nerve (cranial nerve VI) controls the lateral rectus muscle for outward
eye movement.
10. What does the Facial nerve control?
A. Tongue movement
B. Hearing
C. Swallowing
D. Movement of the face, saliva, and tear secretion
Rationale: The facial nerve (cranial nerve VII) controls facial expression and stimulates salivary
and lacrimal glands.
11. What is the CAGE questionnaire used for?
A. To assess depression severity
, B. To screen for alcohol use disorders
C. To diagnose bipolar disorder
D. To evaluate opioid withdrawal
Rationale: CAGE is a brief, 4-question screening tool for identifying potential alcohol problems.
12. What does the 'C' in CAGE stand for?
A. Cut down: Have you ever wanted to cut down on your drinking?
B. Consumption: How much alcohol do you consume daily?
C. Craving: Do you crave alcohol?
D. Control: Do you have control over your drinking?
Rationale: "Cut down" is the first question in the CAGE questionnaire.
13. What is the legal limit for blood alcohol concentration (BAC) for intoxication?
A. 50 mg/dL
B. 80–100 mg/dL
C. 120 mg/dL
D. 150 mg/dL
Rationale: Most legal systems set intoxication at ~0.08% BAC (80 mg/dL).
14. What is the treatment for alcohol withdrawal delirium?
A. Supportive care only
B. Medical emergency; often treated with benzodiazepines
C. Antipsychotics only
D. SSRIs
Rationale: Delirium tremens is life-threatening and requires urgent benzodiazepine therapy.
15. What are the symptoms of mild alcohol withdrawal?
