Test bank for Stahl's Illustrated Sleep and Wake Disorders by
Stahl, Debbi Ann | All (1-3) Chapters Covered With Questions
And Verified Solutions With Detailed Rationales And Case
Studies.
, TABLE OF CONTENT
1. Chapter 1 Neurobiology and Genetics of Sleep/Wake Disorders
2. Chapter 2 Assessment of Sleep/Wake Disorders
3. Chapter 3 Treatment of Sleep/Wake Disorders
TEST BANK: CHAPTER 1
Neurobiology and Genetics of Sleep/Wake Disorders
QUESTION 1
Which of the following brain regions is considered the primary "master clock" that
generates circadian rhythms in mammals?
• A) Pineal gland
• B) Suprachiasmatic nucleus (SCN)
• C) Reticular activating system
• D) Raphe nuclei
Correct Answer: B
Rationale: The suprachiasmatic nucleus (SCN), located in the anterior hypothalamus, is the
principal circadian pacemaker. It receives direct retinal input via the retinohypothalamic tract
and synchronizes peripheral oscillators throughout the body.
Why others are incorrect:
• A) Pineal gland: Secretes melatonin but is downstream of SCN regulation; it does
not generate rhythms.
, • C) Reticular activating system: Involved in arousal and wakefulness, not circadian
timing.
• D) Raphe nuclei: Source of serotonergic projections that modulate sleep-wake
states but are not the master clock.
QUESTION 2
Which neuropeptide is the primary output molecule of the SCN that conveys timing
information to the rest of the brain?
• A) Orexin
• B) Melanin-concentrating hormone (MCH)
• C) Vasoactive intestinal polypeptide (VIP)
• D) Transforming growth factor-alpha (TGF-α)
Correct Answer: C
Rationale: VIP is a key peptidergic neurotransmitter produced by SCN neurons. It
synchronizes SCN cellular oscillators and acts as an important output signal to downstream
hypothalamic and thalamic targets.
Why others are incorrect:
• A) Orexin: Produced by lateral hypothalamus; promotes wakefulness but is not an
SCN output.
• B) MCH: Promotes REM sleep; originates in the lateral hypothalamus.
• D) TGF-α: An SCN output that inhibits locomotor activity but is not the primary
signaling molecule.
QUESTION 3
A mutation in which of the following genes is most classically associated with familial
advanced sleep phase syndrome (FASPS)?
• A) CLOCK
• B) PER2
• C) BMAL1
• D) CRY1
Correct Answer: B
Rationale: FASPS is an autosomal dominant condition linked to a point mutation in
the PER2 gene (S662G) that alters casein kinase Iε (CKIε) phosphorylation, leading to a
shortened circadian period.
Why others are incorrect:
, • A) CLOCK: Mutations in CLOCK disrupt circadian rhythms but are not the classic
FASPS mutation.
• C) BMAL1: Essential for clock function; knockout abolishes rhythms but is not linked
to FASPS.
• D) CRY1: Mutations in CRY1 are associated with delayed sleep phase disorder, not
advanced phase.
QUESTION 4
Which neurotransmitter system is predominantly responsible for cortical arousal and
wakefulness via projections from the brainstem to the thalamus and cortex?
• A) Dopamine
• B) Norepinephrine
• C) Acetylcholine
• D) Serotonin
Correct Answer: C
Rationale: Cholinergic neurons in the pedunculopontine and laterodorsal tegmental nuclei
project to the thalamus and basal forebrain, promoting thalamocortical activation and
desynchronized EEG during wakefulness and REM sleep.
Why others are incorrect:
• A) Dopamine: Modulates reward and motivation but is not the primary cortical
arousal system.
• B) Norepinephrine: Originates from the locus coeruleus; supports vigilance but is
not the main thalamocortical activator.
• D) Serotonin: From the raphe nuclei; stabilizes wakefulness but suppresses REM
sleep.
QUESTION 5
The ventrolateral preoptic nucleus (VLPO) promotes sleep by releasing which
inhibitory neurotransmitters?
• A) Glutamate and aspartate
• B) GABA and galanin
• C) Dopamine and norepinephrine
• D) Orexin and histamine
Correct Answer: B
Rationale: The VLPO is a sleep-promoting center that releases GABA and galanin to inhibit
wake-active monoaminergic nuclei (locus coeruleus, raphe, tuberomammillary nucleus)
during non-REM sleep.
Stahl, Debbi Ann | All (1-3) Chapters Covered With Questions
And Verified Solutions With Detailed Rationales And Case
Studies.
, TABLE OF CONTENT
1. Chapter 1 Neurobiology and Genetics of Sleep/Wake Disorders
2. Chapter 2 Assessment of Sleep/Wake Disorders
3. Chapter 3 Treatment of Sleep/Wake Disorders
TEST BANK: CHAPTER 1
Neurobiology and Genetics of Sleep/Wake Disorders
QUESTION 1
Which of the following brain regions is considered the primary "master clock" that
generates circadian rhythms in mammals?
• A) Pineal gland
• B) Suprachiasmatic nucleus (SCN)
• C) Reticular activating system
• D) Raphe nuclei
Correct Answer: B
Rationale: The suprachiasmatic nucleus (SCN), located in the anterior hypothalamus, is the
principal circadian pacemaker. It receives direct retinal input via the retinohypothalamic tract
and synchronizes peripheral oscillators throughout the body.
Why others are incorrect:
• A) Pineal gland: Secretes melatonin but is downstream of SCN regulation; it does
not generate rhythms.
, • C) Reticular activating system: Involved in arousal and wakefulness, not circadian
timing.
• D) Raphe nuclei: Source of serotonergic projections that modulate sleep-wake
states but are not the master clock.
QUESTION 2
Which neuropeptide is the primary output molecule of the SCN that conveys timing
information to the rest of the brain?
• A) Orexin
• B) Melanin-concentrating hormone (MCH)
• C) Vasoactive intestinal polypeptide (VIP)
• D) Transforming growth factor-alpha (TGF-α)
Correct Answer: C
Rationale: VIP is a key peptidergic neurotransmitter produced by SCN neurons. It
synchronizes SCN cellular oscillators and acts as an important output signal to downstream
hypothalamic and thalamic targets.
Why others are incorrect:
• A) Orexin: Produced by lateral hypothalamus; promotes wakefulness but is not an
SCN output.
• B) MCH: Promotes REM sleep; originates in the lateral hypothalamus.
• D) TGF-α: An SCN output that inhibits locomotor activity but is not the primary
signaling molecule.
QUESTION 3
A mutation in which of the following genes is most classically associated with familial
advanced sleep phase syndrome (FASPS)?
• A) CLOCK
• B) PER2
• C) BMAL1
• D) CRY1
Correct Answer: B
Rationale: FASPS is an autosomal dominant condition linked to a point mutation in
the PER2 gene (S662G) that alters casein kinase Iε (CKIε) phosphorylation, leading to a
shortened circadian period.
Why others are incorrect:
, • A) CLOCK: Mutations in CLOCK disrupt circadian rhythms but are not the classic
FASPS mutation.
• C) BMAL1: Essential for clock function; knockout abolishes rhythms but is not linked
to FASPS.
• D) CRY1: Mutations in CRY1 are associated with delayed sleep phase disorder, not
advanced phase.
QUESTION 4
Which neurotransmitter system is predominantly responsible for cortical arousal and
wakefulness via projections from the brainstem to the thalamus and cortex?
• A) Dopamine
• B) Norepinephrine
• C) Acetylcholine
• D) Serotonin
Correct Answer: C
Rationale: Cholinergic neurons in the pedunculopontine and laterodorsal tegmental nuclei
project to the thalamus and basal forebrain, promoting thalamocortical activation and
desynchronized EEG during wakefulness and REM sleep.
Why others are incorrect:
• A) Dopamine: Modulates reward and motivation but is not the primary cortical
arousal system.
• B) Norepinephrine: Originates from the locus coeruleus; supports vigilance but is
not the main thalamocortical activator.
• D) Serotonin: From the raphe nuclei; stabilizes wakefulness but suppresses REM
sleep.
QUESTION 5
The ventrolateral preoptic nucleus (VLPO) promotes sleep by releasing which
inhibitory neurotransmitters?
• A) Glutamate and aspartate
• B) GABA and galanin
• C) Dopamine and norepinephrine
• D) Orexin and histamine
Correct Answer: B
Rationale: The VLPO is a sleep-promoting center that releases GABA and galanin to inhibit
wake-active monoaminergic nuclei (locus coeruleus, raphe, tuberomammillary nucleus)
during non-REM sleep.
