Drgawad Online Physiology Exams: EEG, Sleep, Thalamus, Hypothalamus, Limbic System

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  • 1/7 Questions

    Regarding REM sleep, which is true:

    • Heart rate is regular
    • Respiratory rate is regular
    • Muscle tone is markedly increased
    • Dreams can be consolidated
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About This Quiz

DrGawad Online Physiology Exams focus on key neurophysiological topics such as EEG, sleep cycles, and functions of the thalamus, hypothalamus, and limbic system. It assesses understanding of pain principles, hypothalamic functions, and sleep-related phenomena.

Neurophysiology Quizzes & Trivia

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  • 2. 

    Regarding non-REM sleep, which is false:

    • Drop of blood pressure

    • Decrease in heart rate

    • Dreams are consolidated

    • Decrease in peripheral vascular tone

    Correct Answer
    A. Dreams are consolidated
    Explanation
    During non-REM sleep, dreams are not consolidated. Dreams are more commonly associated with REM (rapid eye movement) sleep, which is a different stage of sleep. Non-REM sleep is characterized by a decrease in heart rate, a drop in blood pressure, and a decrease in peripheral vascular tone.

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  • 3. 

    Regarding thalamic syndrome, which is true

    • Loss of epicretic sensations of the same side of the body

    • The face sensations are markedly affected

    • Pain is well localized

    • Pain is following the all or nothing principle

    Correct Answer
    A. Pain is following the all or nothing principle
    Explanation
    The statement "pain is following the all or nothing principle" means that in thalamic syndrome, the perception of pain is either completely absent or extremely intense, with no middle ground. This suggests that the thalamus, which is responsible for relaying sensory information to the brain, is not functioning properly. This can result in a loss of epicretic sensations (sensations of touch, pressure, and temperature) on the same side of the body, as well as marked effects on face sensations. However, the statement does not provide any information about the localization of pain or its relationship to the body's midline.

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  • 4. 

    Regarding hypothalamus function, which is true:

    • Feeding center is chronically active

    • Stimulation of anterior hypothalamus increases arousal state

    • Posterior hypothalamus is concerned with heat loss

    • Anterior hypothalamus is concerned with sympathetic control

    Correct Answer
    A. Feeding center is chronically active
    Explanation
    The statement "feeding center is chronically active" means that the hypothalamus is constantly involved in regulating feeding behavior. The hypothalamus plays a crucial role in controlling appetite and satiety through the release of various hormones and neurotransmitters. It monitors nutrient levels in the body and triggers hunger or fullness signals accordingly. This constant activity of the feeding center ensures that the body's energy needs are met and helps maintain a balance in food intake.

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  • 5. 

    Regarding hunger control, which is true

    • Satiety center is chronically active

    • The main regulator of satiety center activity is the blood amino acids level

    • Obesity may occur due to destruction of ventromedial nucleus of the hypothalamus

    • None of the above

    Correct Answer
    A. Obesity may occur due to destruction of ventromedial nucleus of the hypothalamus
    Explanation
    The destruction of the ventromedial nucleus of the hypothalamus can lead to obesity. This is because the ventromedial nucleus is responsible for regulating satiety and controlling hunger. When this area is damaged, it can disrupt the normal signaling and feedback mechanisms that regulate food intake, leading to overeating and weight gain.

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  • 6. 

    Which of the following is considered as a sleeping center:

    • Locus ceruleus

    • Anterior hypothalamus

    • Posterior hypothalamus

    • Basal forebrain

    Correct Answer
    A. Anterior hypothalamus
    Explanation
    The anterior hypothalamus is considered as a sleeping center. It is responsible for regulating sleep and wakefulness. It contains neurons that release inhibitory neurotransmitters, promoting sleep. Stimulation of the anterior hypothalamus can lead to drowsiness and sleep, while damage to this area can cause insomnia.

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  • 7. 

    Regarding hypothalamic functions, which is true

    • During Sham rage reaction the activated nucleus is the anterior hypothalamus

    • Hypothalamus has regulatory control of all endocrinal glands except the ovaries

    • Ant hypothalamus stimulation causes low heart rate

    • The weather is raining, so the anterior hypothalamus is active

    Correct Answer
    A. Ant hypothalamus stimulation causes low heart rate
    Explanation
    The statement "ant hypothalamus stimulation causes low heart rate" is true. The anterior hypothalamus is involved in regulating the autonomic nervous system, which controls various bodily functions including heart rate. Stimulation of the anterior hypothalamus can lead to a decrease in heart rate.

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  • Current Version
  • Mar 21, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Dec 09, 2016
    Quiz Created by
    Drgawadghhhsghh
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