Block 5 Neuro Sleep/Reticular Formation MCQ's

15 Questions | Total Attempts: 830

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Neuro Quizzes & Trivia

Questions and Answers
  • 1. 
    A patient with daytime sleepiness is sent to a sleep lab for analysis. Just after midnight, the EEG records K complexes and sleep spindles. What stage of sleep is being recorded?
    • A. 

      Stage 1

    • B. 

      Dream stage

    • C. 

      Stage 3

    • D. 

      Stage 2

    • E. 

      REM stage

  • 2. 
    Which of the following nuclei are most directly involved in narcolepsy?
    • A. 

      Dorsolateral hypothalamus

    • B. 

      Preoptic nucleus

    • C. 

      Raphe nucleus

    • D. 

      Nucleus of the solitary tract

    • E. 

      Suprachiasmatic nucleus

  • 3. 
    A healthy young medical student is trying not to fall asleep during a boring lecture. Suddenly, a high pitch loud noise makes him feel alert and very aware of his environment. Which part of his reticular formation (RF) is the most involved in this phenomenon?
    • A. 

      Raphe

    • B. 

      Parapontine RF

    • C. 

      Locus coeruleus

    • D. 

      Lateral RF

    • E. 

      Medial RF

  • 4. 
    Among all the structures involved in sleep, which one is receiving direct photic input?
    • A. 

      Raphe

    • B. 

      Suprachiasmatic nucleus

    • C. 

      Pineal body

    • D. 

      Paraventricular nucleus

    • E. 

      Locus coeruleus

  • 5. 
    As compared to wakefulness, which neurotransmitter is increased during all stages of sleep?
    • A. 

      Serotonin

    • B. 

      Norepinephrine

    • C. 

      GABA

    • D. 

      Acetyl-choline

    • E. 

      Dopamine

  • 6. 
    The suprachiasmatic nucleus projects
    • A. 

      Directly to the pineal gland

    • B. 

      Indirectly to the pineal gland

    • C. 

      Indirectly to the raphe

    • D. 

      Directly to the raphe

    • E. 

      Directly to retina

    • F. 

      Indirectly to retina

  • 7. 
    A young mother is concerned about her son's sleep walking. She wonders if this kind of behavior signifies deeper pathology and what she can do for treatment. Given what you know about this behavioral pattern you suspect that her child's sleep walking primarily occurs during which stage of sleep?
    • A. 

      Stage 1 sleep

    • B. 

      A stage of sleep with sleep spindles and K complexes

    • C. 

      REM sleep

    • D. 

      Stage 3 sleep

    • E. 

      Stage 2 sleep

  • 8. 
    A young man with a history of hypersomnia is easily driven into a cataplexic state when emotionally excited. Sometimes, on awakening from sleep, he cannot move his body. Which of the following pharmacological approaches would be effective in treating his hypersomnia?
    • A. 

      GABA agonist

    • B. 

      Drug that increases chloride conductance

    • C. 

      Drug that stimulates release of hypocretin from hypothalamus

    • D. 

      Drug that inhibits tuberomamiliary nucleus of the hypothalamus

    • E. 

      Drug that inhibits locus coeruleus

  • 9. 
    A mother consults with a general health practitioner because she is concerned that her child is talking in his sleep and sleep walking on a nightly basis. Such behavior is?
    • A. 

      Dangerous and a major health risk to the child

    • B. 

      Associated with a stage of sleep in which serotonergic activity is very high

    • C. 

      Easily treated with modafinil

    • D. 

      Associated with a stage of sleep characterized by low amplitude, high frequency wave forms on the EEG

    • E. 

      Associated with a stage of sleep that has waveforms very similar to the Beta waveforms of the waking state

    • F. 

      Associated with a stage of sleep with high amplitude, low frequency wave forms

  • 10. 
    A sleep histogram allows a sleep investigator to observe the stages of sleep. Imagine you were consulting with a patient who complains of intense hypersomnia during the day. Investigation of the airway reveals enlarged tonsils. Obstructive sleep apnea is suspected. Which of the following scenarios would you expect to be the major abnormal feature of this individual's sleep histogram?
    • A. 

      Loss of stage 3

    • B. 

      Increase in REM

    • C. 

      Increase in the number of microawakenings

    • D. 

      Cataplexy

    • E. 

      Loss of muscle atonia during REM

  • 11. 
    Which neurotransmitter is involved in Restless Legs Syndrome?
    • A. 

      Serotonin

    • B. 

      Dopamine

    • C. 

      Noradrenalin

    • D. 

      Acetylcholine

    • E. 

      GABA

  • 12. 
    Among all the structures involved in sleep, which one is receiving afferents from the spinal cord?
    • A. 

      Raphe

    • B. 

      Suprachiasmatic nucleus

    • C. 

      Pineal body

    • D. 

      Paraventricular nucleus

    • E. 

      Locus coeruleus

  • 13. 
    When these cells are activated, REM sleep is turned OFF:
    • A. 

      Cholinergic neurons of the pontine RF, GABAergic neurons of the RF

    • B. 

      Noradrenergic neurons of locus coeruleus, GABAergic neurons of the RF

    • C. 

      Cholinergic neurons of the pontine RF, noradrenergic neurons of locus coeruleus

    • D. 

      GABAergic neurons of the RF, serotoninergic neurons of the Raphe

    • E. 

      Noradrenergic neurons of locus coeruleus, serotoninergic neurons of the Raphe

  • 14. 
    What is the part of the reticular formation (RF) that is dedicated to reception of somatosensory inputs?
    • A. 

      Raphe nuclei

    • B. 

      Magnocellular RF

    • C. 

      Locus coeruleus

    • D. 

      Lateral RF

    • E. 

      Paramedial RF

  • 15. 
    What is the name of the nucleus involved in heartbeat modulation?
    • A. 

      Raphe nuclei

    • B. 

      Locus coeruleus

    • C. 

      Pedunculopontine nucleus

    • D. 

      Nucleus solitarius

    • E. 

      Gigantocellularis nucleus