NR 546 Week 4 Anxiolytic Assessment – Advanced
Psychopharmacology – Anxiolytic Medications –
Chamberlain University – 2026/2027 Academic Year –
Verified Questions and Answers
Section 1: Foundational Neurobiology of Anxiety
1. Which brain structure is most central to the processing of fear and emotional
responses in anxiety disorders?
A) Hippocampus
B) Thalamus
C) Amygdala
D) Prefrontal cortex
Correct Answer: C) Amygdala
Rationale: The amygdala is located deep in the temporal lobes and is involved in
emotional regulation, perception of odors, and the formation of the fear response. It
sends distress signals to the hypothalamus, initiating the fight-or-flight response. All
smells travel directly to this structure, and traumatic events can result in fear response
formation affecting the HPA axis .
2. The hippocampus is primarily associated with which function relevant to
anxiety?
, A) Processing sensory information
B) Long-term memory formation and storage
C) Initiating the fight-or-flight response
D) Regulating neurotransmitter release
Correct Answer: B) Long-term memory formation and storage
Rationale: The hippocampus is involved in shifting short-term to long-term memory
and is associated with anxiety and memory. It helps store memories of fearful
experiences and plays a role in the contextual aspects of fear conditioning .
3. Which structure activates the sympathetic nervous system during the fear
response?
A) Amygdala
B) Hippocampus
C) Hypothalamus
D) Thalamus
Correct Answer: C) Hypothalamus
Rationale: The amygdala interprets sights and sounds associated with stress or fear and
sends a distress signal to the hypothalamus. The hypothalamus then initiates the fight-
or-flight response by activating the sympathetic nervous system .
4. What is the role of the hypothalamic-pituitary-adrenal (HPA) axis in anxiety?
A) It initiates immediate fight-or-flight responses
, B) It results in the release of cortisol during stress
C) It blocks the release of stress hormones
D) It enhances GABA activity in the brain
Correct Answer: B) It results in the release of cortisol during stress
Rationale: As adrenaline subsides, the hypothalamus activates the HPA axis, resulting in
the release of cortisol. Quick elevation of stress hormones can increase survival during
short-term threats; however, ongoing activation in chronic fear or anxiety can increase
morbidity .
5. Which of the following is the chief inhibitory neurotransmitter in the brain?
A) Glutamate
B) Dopamine
C) Norepinephrine
D) GABA
Correct Answer: D) GABA
Rationale: GABA (gamma-aminobutyric acid) is the chief inhibitory neurotransmitter
and decreases neuroexcitability across the brain. It helps people relax, destress, and
sleep. When individuals don't have enough GABA, they may experience anxiety .
6. Which neurotransmitter serves as the primary excitatory neurotransmitter in the
brain?
A) GABA
, B) Serotonin
C) Glutamate
D) Acetylcholine
Correct Answer: C) Glutamate
Rationale: Glutamate is the excitatory neurotransmitter and has been referred to as the
"workhorse of the brain" because it affects almost every neuron. It affects energy,
memory, learning, and neural plasticity. When glutamate levels are too high, it has been
associated with schizophrenia and excitotoxicity .
7. GABA works within the cortico-striatal-thalamic-cortical (CTSC) circuit to:
A) Increase glutamate release
B) Inhibit the anxiety response
C) Activate the sympathetic nervous system
D) Stimulate cortisol release
Correct Answer: B) Inhibit the anxiety response
Rationale: GABA is the "chill" to glutamate's excitatory effects. GABA sends an inhibitory
message, primarily to the amygdala and the prefrontal cortex through the CTSC circuit,
working to inhibit the anxiety response .
8. The orbitofrontal cortex (OFC) affects the amygdala by:
A) Exclusively activating it
B) Exclusively inhibiting it
Psychopharmacology – Anxiolytic Medications –
Chamberlain University – 2026/2027 Academic Year –
Verified Questions and Answers
Section 1: Foundational Neurobiology of Anxiety
1. Which brain structure is most central to the processing of fear and emotional
responses in anxiety disorders?
A) Hippocampus
B) Thalamus
C) Amygdala
D) Prefrontal cortex
Correct Answer: C) Amygdala
Rationale: The amygdala is located deep in the temporal lobes and is involved in
emotional regulation, perception of odors, and the formation of the fear response. It
sends distress signals to the hypothalamus, initiating the fight-or-flight response. All
smells travel directly to this structure, and traumatic events can result in fear response
formation affecting the HPA axis .
2. The hippocampus is primarily associated with which function relevant to
anxiety?
, A) Processing sensory information
B) Long-term memory formation and storage
C) Initiating the fight-or-flight response
D) Regulating neurotransmitter release
Correct Answer: B) Long-term memory formation and storage
Rationale: The hippocampus is involved in shifting short-term to long-term memory
and is associated with anxiety and memory. It helps store memories of fearful
experiences and plays a role in the contextual aspects of fear conditioning .
3. Which structure activates the sympathetic nervous system during the fear
response?
A) Amygdala
B) Hippocampus
C) Hypothalamus
D) Thalamus
Correct Answer: C) Hypothalamus
Rationale: The amygdala interprets sights and sounds associated with stress or fear and
sends a distress signal to the hypothalamus. The hypothalamus then initiates the fight-
or-flight response by activating the sympathetic nervous system .
4. What is the role of the hypothalamic-pituitary-adrenal (HPA) axis in anxiety?
A) It initiates immediate fight-or-flight responses
, B) It results in the release of cortisol during stress
C) It blocks the release of stress hormones
D) It enhances GABA activity in the brain
Correct Answer: B) It results in the release of cortisol during stress
Rationale: As adrenaline subsides, the hypothalamus activates the HPA axis, resulting in
the release of cortisol. Quick elevation of stress hormones can increase survival during
short-term threats; however, ongoing activation in chronic fear or anxiety can increase
morbidity .
5. Which of the following is the chief inhibitory neurotransmitter in the brain?
A) Glutamate
B) Dopamine
C) Norepinephrine
D) GABA
Correct Answer: D) GABA
Rationale: GABA (gamma-aminobutyric acid) is the chief inhibitory neurotransmitter
and decreases neuroexcitability across the brain. It helps people relax, destress, and
sleep. When individuals don't have enough GABA, they may experience anxiety .
6. Which neurotransmitter serves as the primary excitatory neurotransmitter in the
brain?
A) GABA
, B) Serotonin
C) Glutamate
D) Acetylcholine
Correct Answer: C) Glutamate
Rationale: Glutamate is the excitatory neurotransmitter and has been referred to as the
"workhorse of the brain" because it affects almost every neuron. It affects energy,
memory, learning, and neural plasticity. When glutamate levels are too high, it has been
associated with schizophrenia and excitotoxicity .
7. GABA works within the cortico-striatal-thalamic-cortical (CTSC) circuit to:
A) Increase glutamate release
B) Inhibit the anxiety response
C) Activate the sympathetic nervous system
D) Stimulate cortisol release
Correct Answer: B) Inhibit the anxiety response
Rationale: GABA is the "chill" to glutamate's excitatory effects. GABA sends an inhibitory
message, primarily to the amygdala and the prefrontal cortex through the CTSC circuit,
working to inhibit the anxiety response .
8. The orbitofrontal cortex (OFC) affects the amygdala by:
A) Exclusively activating it
B) Exclusively inhibiting it
