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.
Why others are incorrect:
• A) Glutamate and aspartate: Excitatory transmitters that promote wakefulness.
• C) Dopamine and norepinephrine: Wake-promoting monoamines.
• D) Orexin and histamine: Wake-promoting neuropeptides and amines.
QUESTION 6
Which of the following best describes the role of orexin (hypocretin) in sleep-wake regulation?
• A) It initiates REM sleep by inhibiting the VLPO.
• B) It stabilizes wakefulness and prevents inappropriate transitions into REM sleep.
• C) It promotes NREM sleep by activating the thalamus.
| 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.
Why others are incorrect:
• A) Glutamate and aspartate: Excitatory transmitters that promote wakefulness.
• C) Dopamine and norepinephrine: Wake-promoting monoamines.
• D) Orexin and histamine: Wake-promoting neuropeptides and amines.
QUESTION 6
Which of the following best describes the role of orexin (hypocretin) in sleep-wake regulation?
• A) It initiates REM sleep by inhibiting the VLPO.
• B) It stabilizes wakefulness and prevents inappropriate transitions into REM sleep.
• C) It promotes NREM sleep by activating the thalamus.
