Page 1 of 175
Differential Diagnosis in Psychiatric-Mental
Health Across the Lifespan (MSN-PMHNP)
Examplify Online Proctored Exam
Questions and Answers. Chamberlain
University
Q1. Where is norepinephrine primarily synthesized in the central
nervous system?
A) Raphe nuclei
B) Locus coeruleus
C) Substantia nigra
D) Nucleus accumbens
Answer: B) Locus coeruleus
Rationale: The locus coeruleus, located in the pons, is the primary
site for norepinephrine synthesis in the brain. It is crucial for
,Page 2 of 175
arousal, attention, and the stress response. The raphe nuclei
synthesize serotonin, while the substantia nigra synthesizes
dopamine .
Q2. A 28-year-old patient presents with auditory hallucinations
and disorganized speech. Excess dopamine in which pathway is
most associated with these positive symptoms?
A) Mesocortical pathway
B) Nigrostriatal pathway
C) Mesolimbic pathway
D) Tuberoinfundibular pathway
Answer: C) Mesolimbic pathway
Rationale: Hyperactivity of dopamine in the mesolimbic pathway
(VTA to nucleus accumbens) is associated with positive psychotic
symptoms such as hallucinations and delusions. The mesocortical
pathway (hypoactivity) is linked to negative symptoms .
,Page 3 of 175
Q3. Which of the following correctly describes the four major
dopamine pathways and their functions? (Select all that apply)
A) Mesolimbic - positive symptoms of schizophrenia
B) Mesocortical - negative and cognitive symptoms
C) Nigrostriatal - motor control (EPS when blocked)
D) Tuberoinfundibular - prolactin regulation
Answer: A, B, C, D (All options are correct)
Rationale: All four dopamine pathways have distinct clinical
implications. Mesolimbic: positive symptoms; Mesocortical:
negative/cognitive symptoms; Nigrostriatal: motor control
(blockade causes EPS); Tuberoinfundibular: prolactin regulation
(blockade causes hyperprolactinemia) .
Q4. Blockade of dopamine in which pathway leads to
extrapyramidal symptoms (EPS)?
, Page 4 of 175
A) Mesolimbic
B) Nigrostriatal
C) Tuberoinfundibular
D) Mesocortical
Answer: B) Nigrostriatal
Rationale: The nigrostriatal pathway runs from the substantia
nigra to the basal ganglia and coordinates motor movement.
Dopamine D2 receptor blockade in this pathway leads to EPS
including dystonia, parkinsonism, akathisia, and tardive
dyskinesia .
Q5. A patient on risperidone develops galactorrhea and
amenorrhea. This is due to dopamine blockade in which
pathway?
A) Mesolimbic pathway
B) Nigrostriatal pathway
Differential Diagnosis in Psychiatric-Mental
Health Across the Lifespan (MSN-PMHNP)
Examplify Online Proctored Exam
Questions and Answers. Chamberlain
University
Q1. Where is norepinephrine primarily synthesized in the central
nervous system?
A) Raphe nuclei
B) Locus coeruleus
C) Substantia nigra
D) Nucleus accumbens
Answer: B) Locus coeruleus
Rationale: The locus coeruleus, located in the pons, is the primary
site for norepinephrine synthesis in the brain. It is crucial for
,Page 2 of 175
arousal, attention, and the stress response. The raphe nuclei
synthesize serotonin, while the substantia nigra synthesizes
dopamine .
Q2. A 28-year-old patient presents with auditory hallucinations
and disorganized speech. Excess dopamine in which pathway is
most associated with these positive symptoms?
A) Mesocortical pathway
B) Nigrostriatal pathway
C) Mesolimbic pathway
D) Tuberoinfundibular pathway
Answer: C) Mesolimbic pathway
Rationale: Hyperactivity of dopamine in the mesolimbic pathway
(VTA to nucleus accumbens) is associated with positive psychotic
symptoms such as hallucinations and delusions. The mesocortical
pathway (hypoactivity) is linked to negative symptoms .
,Page 3 of 175
Q3. Which of the following correctly describes the four major
dopamine pathways and their functions? (Select all that apply)
A) Mesolimbic - positive symptoms of schizophrenia
B) Mesocortical - negative and cognitive symptoms
C) Nigrostriatal - motor control (EPS when blocked)
D) Tuberoinfundibular - prolactin regulation
Answer: A, B, C, D (All options are correct)
Rationale: All four dopamine pathways have distinct clinical
implications. Mesolimbic: positive symptoms; Mesocortical:
negative/cognitive symptoms; Nigrostriatal: motor control
(blockade causes EPS); Tuberoinfundibular: prolactin regulation
(blockade causes hyperprolactinemia) .
Q4. Blockade of dopamine in which pathway leads to
extrapyramidal symptoms (EPS)?
, Page 4 of 175
A) Mesolimbic
B) Nigrostriatal
C) Tuberoinfundibular
D) Mesocortical
Answer: B) Nigrostriatal
Rationale: The nigrostriatal pathway runs from the substantia
nigra to the basal ganglia and coordinates motor movement.
Dopamine D2 receptor blockade in this pathway leads to EPS
including dystonia, parkinsonism, akathisia, and tardive
dyskinesia .
Q5. A patient on risperidone develops galactorrhea and
amenorrhea. This is due to dopamine blockade in which
pathway?
A) Mesolimbic pathway
B) Nigrostriatal pathway
