Tempature Regulation-physiology

7 Questions | Total Attempts: 907

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Physiology Quizzes & Trivia

According to the discussions in our previous class, we got to understand thermoregulation and how the process takes place. An environment is said to be thermos neutral when the body does not expend or release energy to maintain its core temperature. Test how well you understood the topic as you prepare for the upcoming midterms by taking this quiz. All the best!


Questions and Answers
  • 1. 
    Acclimatization to a hot environment includes the following change in sweat?
    • A. 

      More dilute

    • B. 

      More oily

    • C. 

      Delayed onset

    • D. 

      More volatile

    • E. 

      More salty

  • 2. 
    Core temperature is elevated during fever and exercise.   What distinguishes the rise in core temperature during fever from that during exercise?
    • A. 

      Increased basal metabolic rate

    • B. 

      Reduced sweat formation

    • C. 

      Non-shivering thermogenesis

    • D. 

      Reduced skin blood flow

    • E. 

      Increased thermal setpoint

  • 3. 
    A surgical sympathectomy has completely interrupted the sympathetic nerves to a patient’s arm. How would you expect the thermoregulatory skin blood flow and sweating responses in that arm to be affected? Vasoconstriction                              Vasodilation                       Sweat        in the cold                                   in the heat                          formation
    • A. 

      Abolished…………………Intact………………….Intact

    • B. 

      Abolished…………………Intact……………….…Abolished

    • C. 

      Abolished…………………Abolished………….. Intact

    • D. 

      Abolished………………..Abolished……………Abolished

  • 4. 
    The gain or loss of heat as infrared energy between two objects that are not in physical contact with each other is called what?
    • A. 

      Conduction

    • B. 

      Convection

    • C. 

      Radiation

    • D. 

      Evaporation

  • 5. 
    Which of the following is TRUE regarding the regulation of body temperature?
    • A. 

      In a temperate climate under normal conditions, the greatest loss of body heat occurs through radiation

    • B. 

      During water immersion, heat is mainly lost via radiation

    • C. 

      The thalamus is the centre for integrating thermal information

    • D. 

      As the skin possesses thermoreceptors, its temperature is regulated more closely than the core temperature

  • 6. 
    Which of the following is TRUE regarding sweating and heat loss?
    • A. 

      Heat loss through sweating is controlled by the parasympathetic nervous system

    • B. 

      The efficacy of sweating as a mechanism of heat loss is increased in tropical rain forest

    • C. 

      Profuse sweating can lead to heat exhaustion

    • D. 

      Common sweat is secreted by the apocrine glands

  • 7. 
    Pathogens that produce fever cause which of the following?
    • A. 

      Decreased production of interleukin-1 (IL-1)

    • B. 

      Decreased set-point temperature in the hypothalamus

    • C. 

      Shivering

    • D. 

      Vasodilation of blood vessels in the skin