PMHNP Georgette Psychiatric Mental Health NP
Review Exam Actual Exam 2026/2027 – Complete
Exam-Style Questions | 100% Verified – Pass
Guaranteed – A+ Graded
Foundations of Psychiatric Mental Health Practice
(Neurobiology, Psychopathology, Neurotransmitter Systems, Brain Structures, Genetic/Epigenetic
Factors)
Q1: A 28-year-old patient with major depressive disorder is started on an SSRI. Which neurotransmitter
system is primarily targeted by this medication class?
A. Dopamine pathways exclusively
B. Serotonin reuptake inhibition, with downstream effects on neuroplasticity and neurogenesis
[CORRECT]
C. GABA receptors only
D. Acetylcholine esterase
Correct Answer: B
Rationale: The best answer is B. SSRIs primarily inhibit serotonin reuptake at the presynaptic
membrane, increasing synaptic serotonin availability; over time, this leads to downstream changes in
receptor sensitivity, neuroplasticity, and hippocampal neurogenesis that are thought to underlie
antidepressant effects. This choice is correct because it captures both the immediate mechanism and
the delayed therapeutic effects. This aligns with current understanding that antidepressant efficacy
involves neuroplastic changes beyond simple receptor occupancy.
Q2: Which brain structure is most implicated in the pathophysiology of post-traumatic stress disorder
(PTSD)?
A. The cerebellum
,B. The amygdala, with hyperactivity and impaired prefrontal cortical regulation [CORRECT]
C. The occipital lobe
D. The motor cortex
Correct Answer: B
Rationale: The best answer is B. PTSD involves hyperactivity of the amygdala (fear processing) with
impaired top-down regulation by the medial prefrontal cortex and anterior cingulate, along with
hippocampal volume reductions. This choice is correct because it identifies the core neural circuitry
dysfunction. This reflects the standard neurobiological understanding that PTSD represents a
dysregulation of fear extinction and threat detection systems.
Q3: A patient with schizophrenia has prominent negative symptoms including flat affect, social
withdrawal, and anhedonia. Which neurotransmitter hypothesis best explains these symptoms?
A. Excessive dopamine in the mesolimbic pathway
B. Hypodopaminergic activity in the mesocortical pathway [CORRECT]
C. Excessive serotonin in the raphe nuclei
D. Excessive GABA in the hippocampus
Correct Answer: B
Rationale: The best answer is B. The hypodopaminergic hypothesis of negative symptoms suggests that
reduced dopamine activity in the mesocortical pathway (projecting from the ventral tegmental area to
the prefrontal cortex) underlies negative symptoms, while hyperdopaminergic activity in the mesolimbic
pathway explains positive symptoms. This choice is correct because it distinguishes the two dopamine
pathways. This reflects the standard understanding that schizophrenia involves differential dopamine
dysregulation across brain regions.
Q4: Which of the following best describes the stress-diathesis model of psychiatric illness?
A. Illness is caused entirely by genetic factors
B. Illness results from the interaction between genetic vulnerability (diathesis) and environmental
stressors [CORRECT]
C. Illness is caused entirely by childhood trauma
D. Illness can be prevented by willpower alone
,Correct Answer: B
Rationale: The best answer is B. The stress-diathesis model posits that psychiatric disorders emerge
when genetic or biological vulnerability interacts with environmental stressors, with neither factor alone
being sufficient in most cases. This choice is correct because it captures the interactional nature of the
model. This aligns with contemporary psychiatric understanding that recognizes the interplay of
biological predisposition and life experience in illness expression.
Q5: A patient with bipolar disorder is experiencing a manic episode. Which neurotransmitter change is
most consistently associated with mania?
A. Decreased dopamine activity
B. Increased dopaminergic and noradrenergic activity with alterations in second messenger systems
[CORRECT]
C. Decreased serotonin exclusively
D. Increased GABA activity
Correct Answer: B
Rationale: The best answer is B. Mania is associated with increased dopaminergic and noradrenergic
neurotransmission, along with dysregulation of intracellular signaling cascades including protein kinase
C and G-protein coupled pathways. This choice is correct because it identifies the catecholamine
hyperactivity central to mania. This reflects the standard neurobiological understanding that informs
both the pathophysiology and pharmacologic treatment of bipolar mania.
Q6: Which brain region is primarily responsible for executive functions including planning, impulse
control, and working memory?
A. The amygdala
B. The dorsolateral prefrontal cortex [CORRECT]
C. The cerebellum
D. The hypothalamus
Correct Answer: B
Rationale: The best answer is B. The dorsolateral prefrontal cortex is the key region for executive
functions, including planning, cognitive flexibility, working memory, and inhibitory control; dysfunction
here is implicated in ADHD, schizophrenia, and mood disorders. This choice is correct because it
, identifies the specific prefrontal region. This aligns with neuropsychological and neuroimaging evidence
that consistently localizes executive function to this area.
Q7: A patient with obsessive-compulsive disorder (OCD) shows hyperactivity in which neural circuit?
A. The cortico-striato-thalamo-cortical (CSTC) circuit [CORRECT]
B. The visual pathway exclusively
C. The auditory pathway exclusively
D. The spinal reflex arc
Correct Answer: A
Rationale: The best answer is A. OCD involves dysfunction in the cortico-striato-thalamo-cortical circuit,
with hyperactivity particularly in the orbitofrontal cortex, anterior cingulate, and caudate nucleus,
creating a "worry loop" of intrusive thoughts and compulsive behaviors. This choice is correct because it
identifies the specific circuit implicated in OCD. This reflects the standard neurobiological model that has
informed both pharmacologic and neuromodulation treatments for OCD.
Q8: Which genetic factor has the strongest association with schizophrenia?
A. A single gene that causes the disorder
B. Polygenic risk involving hundreds of common variants, with copy number variations and rare
mutations contributing [CORRECT]
C. No genetic component exists
D. Only mitochondrial DNA mutations
Correct Answer: B
Rationale: The best answer is B. Schizophrenia is highly heritable but polygenic, with risk conferred by
the cumulative effect of hundreds of common genetic variants of small effect, plus rare copy number
variations and mutations with larger effects. This choice is correct because it reflects the complex
genetic architecture. This aligns with contemporary psychiatric genetics that has moved beyond single-
gene models to recognize polygenic risk scores and gene-environment interactions.
Q9: A patient with major depressive disorder shows decreased volume in which brain region on MRI?
Review Exam Actual Exam 2026/2027 – Complete
Exam-Style Questions | 100% Verified – Pass
Guaranteed – A+ Graded
Foundations of Psychiatric Mental Health Practice
(Neurobiology, Psychopathology, Neurotransmitter Systems, Brain Structures, Genetic/Epigenetic
Factors)
Q1: A 28-year-old patient with major depressive disorder is started on an SSRI. Which neurotransmitter
system is primarily targeted by this medication class?
A. Dopamine pathways exclusively
B. Serotonin reuptake inhibition, with downstream effects on neuroplasticity and neurogenesis
[CORRECT]
C. GABA receptors only
D. Acetylcholine esterase
Correct Answer: B
Rationale: The best answer is B. SSRIs primarily inhibit serotonin reuptake at the presynaptic
membrane, increasing synaptic serotonin availability; over time, this leads to downstream changes in
receptor sensitivity, neuroplasticity, and hippocampal neurogenesis that are thought to underlie
antidepressant effects. This choice is correct because it captures both the immediate mechanism and
the delayed therapeutic effects. This aligns with current understanding that antidepressant efficacy
involves neuroplastic changes beyond simple receptor occupancy.
Q2: Which brain structure is most implicated in the pathophysiology of post-traumatic stress disorder
(PTSD)?
A. The cerebellum
,B. The amygdala, with hyperactivity and impaired prefrontal cortical regulation [CORRECT]
C. The occipital lobe
D. The motor cortex
Correct Answer: B
Rationale: The best answer is B. PTSD involves hyperactivity of the amygdala (fear processing) with
impaired top-down regulation by the medial prefrontal cortex and anterior cingulate, along with
hippocampal volume reductions. This choice is correct because it identifies the core neural circuitry
dysfunction. This reflects the standard neurobiological understanding that PTSD represents a
dysregulation of fear extinction and threat detection systems.
Q3: A patient with schizophrenia has prominent negative symptoms including flat affect, social
withdrawal, and anhedonia. Which neurotransmitter hypothesis best explains these symptoms?
A. Excessive dopamine in the mesolimbic pathway
B. Hypodopaminergic activity in the mesocortical pathway [CORRECT]
C. Excessive serotonin in the raphe nuclei
D. Excessive GABA in the hippocampus
Correct Answer: B
Rationale: The best answer is B. The hypodopaminergic hypothesis of negative symptoms suggests that
reduced dopamine activity in the mesocortical pathway (projecting from the ventral tegmental area to
the prefrontal cortex) underlies negative symptoms, while hyperdopaminergic activity in the mesolimbic
pathway explains positive symptoms. This choice is correct because it distinguishes the two dopamine
pathways. This reflects the standard understanding that schizophrenia involves differential dopamine
dysregulation across brain regions.
Q4: Which of the following best describes the stress-diathesis model of psychiatric illness?
A. Illness is caused entirely by genetic factors
B. Illness results from the interaction between genetic vulnerability (diathesis) and environmental
stressors [CORRECT]
C. Illness is caused entirely by childhood trauma
D. Illness can be prevented by willpower alone
,Correct Answer: B
Rationale: The best answer is B. The stress-diathesis model posits that psychiatric disorders emerge
when genetic or biological vulnerability interacts with environmental stressors, with neither factor alone
being sufficient in most cases. This choice is correct because it captures the interactional nature of the
model. This aligns with contemporary psychiatric understanding that recognizes the interplay of
biological predisposition and life experience in illness expression.
Q5: A patient with bipolar disorder is experiencing a manic episode. Which neurotransmitter change is
most consistently associated with mania?
A. Decreased dopamine activity
B. Increased dopaminergic and noradrenergic activity with alterations in second messenger systems
[CORRECT]
C. Decreased serotonin exclusively
D. Increased GABA activity
Correct Answer: B
Rationale: The best answer is B. Mania is associated with increased dopaminergic and noradrenergic
neurotransmission, along with dysregulation of intracellular signaling cascades including protein kinase
C and G-protein coupled pathways. This choice is correct because it identifies the catecholamine
hyperactivity central to mania. This reflects the standard neurobiological understanding that informs
both the pathophysiology and pharmacologic treatment of bipolar mania.
Q6: Which brain region is primarily responsible for executive functions including planning, impulse
control, and working memory?
A. The amygdala
B. The dorsolateral prefrontal cortex [CORRECT]
C. The cerebellum
D. The hypothalamus
Correct Answer: B
Rationale: The best answer is B. The dorsolateral prefrontal cortex is the key region for executive
functions, including planning, cognitive flexibility, working memory, and inhibitory control; dysfunction
here is implicated in ADHD, schizophrenia, and mood disorders. This choice is correct because it
, identifies the specific prefrontal region. This aligns with neuropsychological and neuroimaging evidence
that consistently localizes executive function to this area.
Q7: A patient with obsessive-compulsive disorder (OCD) shows hyperactivity in which neural circuit?
A. The cortico-striato-thalamo-cortical (CSTC) circuit [CORRECT]
B. The visual pathway exclusively
C. The auditory pathway exclusively
D. The spinal reflex arc
Correct Answer: A
Rationale: The best answer is A. OCD involves dysfunction in the cortico-striato-thalamo-cortical circuit,
with hyperactivity particularly in the orbitofrontal cortex, anterior cingulate, and caudate nucleus,
creating a "worry loop" of intrusive thoughts and compulsive behaviors. This choice is correct because it
identifies the specific circuit implicated in OCD. This reflects the standard neurobiological model that has
informed both pharmacologic and neuromodulation treatments for OCD.
Q8: Which genetic factor has the strongest association with schizophrenia?
A. A single gene that causes the disorder
B. Polygenic risk involving hundreds of common variants, with copy number variations and rare
mutations contributing [CORRECT]
C. No genetic component exists
D. Only mitochondrial DNA mutations
Correct Answer: B
Rationale: The best answer is B. Schizophrenia is highly heritable but polygenic, with risk conferred by
the cumulative effect of hundreds of common genetic variants of small effect, plus rare copy number
variations and mutations with larger effects. This choice is correct because it reflects the complex
genetic architecture. This aligns with contemporary psychiatric genetics that has moved beyond single-
gene models to recognize polygenic risk scores and gene-environment interactions.
Q9: A patient with major depressive disorder shows decreased volume in which brain region on MRI?
