BARKLEY PSYCHIATRIC DISORDERS PRACTICE EXAM
Comprehensive 200 Question Practice Examination
– New Edition
Question 1
Which neurotransmitter is primarily associated with the positive
symptoms of schizophrenia?
A. Serotonin
B. Dopamine
C. Norepinephrine
D. GABA
Answer: B
Rationale: Dopamine hyperactivity in the mesolimbic pathway is
associated with positive symptoms of schizophrenia (hallucinations,
delusions). Serotonin (A) is associated with mood and anxiety.
Norepinephrine (C) is associated with arousal and mood. GABA (D) is
the primary inhibitory neurotransmitter.
Question 2
Which brain structure is primarily associated with fear processing and
PTSD hyperarousal?
A. Hippocampus
B. Amygdala
,C. Prefrontal cortex
D. Cerebellum
Answer: B
Rationale: The amygdala is implicated in fear processing and threat
detection, and is hyperactive in PTSD. The hippocampus (A) is
associated with memory. The prefrontal cortex (C) is associated
with executive function. The cerebellum (D) is associated with
coordination.
Question 3
Degeneration of the basal nucleus of Meynert is most closely associated
with which condition?
A. Alzheimer's disease
B. Parkinson's disease
C. Huntington's disease
D. Schizophrenia
Answer: A
Rationale: The basal nucleus of Meynert is the primary source of
cortical acetylcholine. Its degeneration is a hallmark of Alzheimer's
disease, contributing to memory deficits. Parkinson's (B) involves
the substantia nigra. Huntington's (C) involves the caudate nucleus.
Schizophrenia (D) involves dopaminergic pathways.
Question 4
Which of the following is the primary inhibitory neurotransmitter in the
central nervous system?
,A. Glutamate
B. GABA
C. Acetylcholine
D. Dopamine
Answer: B
Rationale: Gamma-aminobutyric acid (GABA) is the primary
inhibitory neurotransmitter in the CNS. Glutamate (A) is the primary
excitatory neurotransmitter. Acetylcholine (C) and Dopamine (D)
are modulatory neurotransmitters.
Question 5
A lesion in the substantia nigra pars compacta would most likely result in
which of the following?
A. Huntington's disease
B. Parkinson's disease
C. Alzheimer's disease
D. Amyotrophic lateral sclerosis
Answer: B
Rationale: The substantia nigra pars compacta contains
dopaminergic neurons that project to the striatum. Degeneration of
these neurons causes Parkinson's disease. Huntington's (A) involves
the caudate. Alzheimer's (C) involves the cortex and hippocampus.
ALS (D) involves motor neurons.
Question 6
The mechanism of action of benzodiazepines involves increasing the
, frequency of chloride channel opening at which receptor?
A. 5-HT2A
B. GABA-A
C. NMDA
D. D2
Answer: B
Rationale: Benzodiazepines bind to the GABA-A receptor at a site
distinct from the GABA binding site, increasing the frequency of
chloride channel opening and enhancing inhibition. 5-HT2A (A) is a
serotonin receptor. NMDA (C) is a glutamate receptor. D2 (D) is a
dopamine receptor.
Question 7
Which pathway is primarily implicated in the negative symptoms of
schizophrenia?
A. Mesolimbic pathway
B. Mesocortical pathway
C. Nigrostriatal pathway
D. Tuberoinfundibular pathway
Answer: B
Rationale: Hypoactivity of the mesocortical pathway (specifically to
the prefrontal cortex) is associated with negative symptoms and
cognitive deficits in schizophrenia. The mesolimbic pathway (A) is
associated with positive symptoms. The nigrostriatal pathway (C) is
Comprehensive 200 Question Practice Examination
– New Edition
Question 1
Which neurotransmitter is primarily associated with the positive
symptoms of schizophrenia?
A. Serotonin
B. Dopamine
C. Norepinephrine
D. GABA
Answer: B
Rationale: Dopamine hyperactivity in the mesolimbic pathway is
associated with positive symptoms of schizophrenia (hallucinations,
delusions). Serotonin (A) is associated with mood and anxiety.
Norepinephrine (C) is associated with arousal and mood. GABA (D) is
the primary inhibitory neurotransmitter.
Question 2
Which brain structure is primarily associated with fear processing and
PTSD hyperarousal?
A. Hippocampus
B. Amygdala
,C. Prefrontal cortex
D. Cerebellum
Answer: B
Rationale: The amygdala is implicated in fear processing and threat
detection, and is hyperactive in PTSD. The hippocampus (A) is
associated with memory. The prefrontal cortex (C) is associated
with executive function. The cerebellum (D) is associated with
coordination.
Question 3
Degeneration of the basal nucleus of Meynert is most closely associated
with which condition?
A. Alzheimer's disease
B. Parkinson's disease
C. Huntington's disease
D. Schizophrenia
Answer: A
Rationale: The basal nucleus of Meynert is the primary source of
cortical acetylcholine. Its degeneration is a hallmark of Alzheimer's
disease, contributing to memory deficits. Parkinson's (B) involves
the substantia nigra. Huntington's (C) involves the caudate nucleus.
Schizophrenia (D) involves dopaminergic pathways.
Question 4
Which of the following is the primary inhibitory neurotransmitter in the
central nervous system?
,A. Glutamate
B. GABA
C. Acetylcholine
D. Dopamine
Answer: B
Rationale: Gamma-aminobutyric acid (GABA) is the primary
inhibitory neurotransmitter in the CNS. Glutamate (A) is the primary
excitatory neurotransmitter. Acetylcholine (C) and Dopamine (D)
are modulatory neurotransmitters.
Question 5
A lesion in the substantia nigra pars compacta would most likely result in
which of the following?
A. Huntington's disease
B. Parkinson's disease
C. Alzheimer's disease
D. Amyotrophic lateral sclerosis
Answer: B
Rationale: The substantia nigra pars compacta contains
dopaminergic neurons that project to the striatum. Degeneration of
these neurons causes Parkinson's disease. Huntington's (A) involves
the caudate. Alzheimer's (C) involves the cortex and hippocampus.
ALS (D) involves motor neurons.
Question 6
The mechanism of action of benzodiazepines involves increasing the
, frequency of chloride channel opening at which receptor?
A. 5-HT2A
B. GABA-A
C. NMDA
D. D2
Answer: B
Rationale: Benzodiazepines bind to the GABA-A receptor at a site
distinct from the GABA binding site, increasing the frequency of
chloride channel opening and enhancing inhibition. 5-HT2A (A) is a
serotonin receptor. NMDA (C) is a glutamate receptor. D2 (D) is a
dopamine receptor.
Question 7
Which pathway is primarily implicated in the negative symptoms of
schizophrenia?
A. Mesolimbic pathway
B. Mesocortical pathway
C. Nigrostriatal pathway
D. Tuberoinfundibular pathway
Answer: B
Rationale: Hypoactivity of the mesocortical pathway (specifically to
the prefrontal cortex) is associated with negative symptoms and
cognitive deficits in schizophrenia. The mesolimbic pathway (A) is
associated with positive symptoms. The nigrostriatal pathway (C) is
