KAPLAN AND SADOCKS
SYNOPSIS OF PSYCHIATRY
PRACTICE ASSESSMENT
2026 COMPREHENSIVE
SCRIPT
Kaplan & Sadock's Synopsis of Psychiatry Practice
Assessment (Blueprint-Aligned)
Section 1: Neural Sciences & Foundations
1. Which morphological region of the neuron contains the nucleus and serves as
the metabolic center?
A. Dendrites
B. Axon
C. Cell body (soma)
D. Axon terminals
Rationale: The cell body or soma contains the nucleus and is the metabolic center of
the neuron. Dendrites are the major recipient zones of input; the axon conveys
information to other neurons; axon terminals release neurotransmitters.
2. A reduced density of interneurons in layer 2 of the prefrontal cortex has been
observed among patients with:
,A. Bipolar disorder
B. Major depression
C. Obsessive-compulsive disorder
D. Schizophrenia
Rationale: Research shows that in a significant number of patients with schizophrenia,
the prefrontal cortex exhibits a reduced density of interneurons in layer 2, with
upregulation of GABA_A receptor binding and a relative deficiency of nitric oxide
synthase (NOS)-expressing neurons.
3. The cell bodies of serotonergic neurons are located in which region of the brain?
A. Midline raphe nuclei of the brainstem
B. Midbrain substantia nigra and ventral tegmental area
C. Locus ceruleus and lateral tegmental noradrenergic nuclei
D. Tuberomammillary nucleus of the posterior hypothalamus
Rationale: Serotonergic cell bodies are located in the midline raphe nuclei of the
brainstem. Dopamine neurons are in the substantia nigra and ventral tegmental areas.
Norepinephrine neurons are in the locus ceruleus and lateral tegmental nuclei.
4. Which neurotransmitter is most implicated in the reward pathway and central to
the pathophysiology of substance use disorders?
A. Serotonin
B. Dopamine
C. Acetylcholine
D. Glutamate
Rationale: Dopamine is the primary neurotransmitter of the mesolimbic reward
pathway, originating in the ventral tegmental area and projecting to the nucleus
accumbens. Substance use disorders are characterized by dysregulation of this
dopaminergic circuit.
,5. The blood-brain barrier is primarily maintained by which cell type?
A. Microglia
B. Oligodendrocytes
C. Astrocytes
D. Ependymal cells
Rationale: Astrocytes send projections called end-feet that wrap around capillary
endothelial cells, providing structural and functional support to the blood-brain barrier.
They regulate the tight junctions that restrict passage of substances into the brain.
6. Which lobe of the brain is primarily responsible for executive functioning and
personality?
A. Parietal lobe
B. Occipital lobe
C. Limbic lobe
D. Frontal lobe
Rationale: The frontal lobe, particularly the prefrontal cortex, governs executive
functions such as planning, decision-making, impulse control, and personality
expression. Damage produces characteristic personality changes.
7. Long-term potentiation (LTP), the cellular basis of memory, primarily involves
which receptor?
A. GABA-A receptor
B. Dopamine D2 receptor
C. NMDA receptor
D. Serotonin 5-HT2A receptor
Rationale: NMDA receptors are voltage-gated and ligand-gated ion channels critical for
synaptic plasticity and long-term potentiation. Their activation allows calcium influx,
triggering signaling cascades that strengthen synaptic connections.
, 8. Which neurotransmitter is synthesized from tryptophan?
A. Dopamine
B. Serotonin
C. GABA
D. Acetylcholine
Rationale: Serotonin (5-hydroxytryptamine) is synthesized from the essential amino
acid tryptophan via the intermediate 5-hydroxytryptophan. SSRIs enhance serotonergic
neurotransmission by blocking reuptake.
9. The hypothalamic-pituitary-adrenal (HPA) axis is most dysregulated in which
psychiatric condition?
A. Bipolar I disorder
B. Schizophrenia
C. Obsessive-compulsive disorder
D. Major depressive disorder
Rationale: Major depressive disorder is associated with chronic HPA axis
hyperactivation, elevated cortisol levels, and failure of the dexamethasone suppression
test. Hypercortisolemia leads to hippocampal atrophy, contributing to cognitive
symptoms.
10. Which brain structure serves as the primary relay station for sensory
information to the cortex?
A. Hypothalamus
B. Thalamus
C. Amygdala
D. Hippocampus
SYNOPSIS OF PSYCHIATRY
PRACTICE ASSESSMENT
2026 COMPREHENSIVE
SCRIPT
Kaplan & Sadock's Synopsis of Psychiatry Practice
Assessment (Blueprint-Aligned)
Section 1: Neural Sciences & Foundations
1. Which morphological region of the neuron contains the nucleus and serves as
the metabolic center?
A. Dendrites
B. Axon
C. Cell body (soma)
D. Axon terminals
Rationale: The cell body or soma contains the nucleus and is the metabolic center of
the neuron. Dendrites are the major recipient zones of input; the axon conveys
information to other neurons; axon terminals release neurotransmitters.
2. A reduced density of interneurons in layer 2 of the prefrontal cortex has been
observed among patients with:
,A. Bipolar disorder
B. Major depression
C. Obsessive-compulsive disorder
D. Schizophrenia
Rationale: Research shows that in a significant number of patients with schizophrenia,
the prefrontal cortex exhibits a reduced density of interneurons in layer 2, with
upregulation of GABA_A receptor binding and a relative deficiency of nitric oxide
synthase (NOS)-expressing neurons.
3. The cell bodies of serotonergic neurons are located in which region of the brain?
A. Midline raphe nuclei of the brainstem
B. Midbrain substantia nigra and ventral tegmental area
C. Locus ceruleus and lateral tegmental noradrenergic nuclei
D. Tuberomammillary nucleus of the posterior hypothalamus
Rationale: Serotonergic cell bodies are located in the midline raphe nuclei of the
brainstem. Dopamine neurons are in the substantia nigra and ventral tegmental areas.
Norepinephrine neurons are in the locus ceruleus and lateral tegmental nuclei.
4. Which neurotransmitter is most implicated in the reward pathway and central to
the pathophysiology of substance use disorders?
A. Serotonin
B. Dopamine
C. Acetylcholine
D. Glutamate
Rationale: Dopamine is the primary neurotransmitter of the mesolimbic reward
pathway, originating in the ventral tegmental area and projecting to the nucleus
accumbens. Substance use disorders are characterized by dysregulation of this
dopaminergic circuit.
,5. The blood-brain barrier is primarily maintained by which cell type?
A. Microglia
B. Oligodendrocytes
C. Astrocytes
D. Ependymal cells
Rationale: Astrocytes send projections called end-feet that wrap around capillary
endothelial cells, providing structural and functional support to the blood-brain barrier.
They regulate the tight junctions that restrict passage of substances into the brain.
6. Which lobe of the brain is primarily responsible for executive functioning and
personality?
A. Parietal lobe
B. Occipital lobe
C. Limbic lobe
D. Frontal lobe
Rationale: The frontal lobe, particularly the prefrontal cortex, governs executive
functions such as planning, decision-making, impulse control, and personality
expression. Damage produces characteristic personality changes.
7. Long-term potentiation (LTP), the cellular basis of memory, primarily involves
which receptor?
A. GABA-A receptor
B. Dopamine D2 receptor
C. NMDA receptor
D. Serotonin 5-HT2A receptor
Rationale: NMDA receptors are voltage-gated and ligand-gated ion channels critical for
synaptic plasticity and long-term potentiation. Their activation allows calcium influx,
triggering signaling cascades that strengthen synaptic connections.
, 8. Which neurotransmitter is synthesized from tryptophan?
A. Dopamine
B. Serotonin
C. GABA
D. Acetylcholine
Rationale: Serotonin (5-hydroxytryptamine) is synthesized from the essential amino
acid tryptophan via the intermediate 5-hydroxytryptophan. SSRIs enhance serotonergic
neurotransmission by blocking reuptake.
9. The hypothalamic-pituitary-adrenal (HPA) axis is most dysregulated in which
psychiatric condition?
A. Bipolar I disorder
B. Schizophrenia
C. Obsessive-compulsive disorder
D. Major depressive disorder
Rationale: Major depressive disorder is associated with chronic HPA axis
hyperactivation, elevated cortisol levels, and failure of the dexamethasone suppression
test. Hypercortisolemia leads to hippocampal atrophy, contributing to cognitive
symptoms.
10. Which brain structure serves as the primary relay station for sensory
information to the cortex?
A. Hypothalamus
B. Thalamus
C. Amygdala
D. Hippocampus
