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5 Written questions

5 Matching questions

  1. Rate of Heat Loss
  2. Peripheral (Proteins)
  3. High Intracellular Ion Concentrations
  4. Survivable Ambient Temperature Range
  5. Hypothalamic Temperature Control (Hot)
  1. a * Vasodilatation of dermal blood vessels and increased blood flow to the skin (8 fold reduction in heat)
    * Sweat (removes 10 times basal metabolic rate heat)
    * Heat production inhibited
  2. b * Found absorbed or attached on the outside surface(s) of the bilayer
    * Cell-surface antigens and hormone receptors
  3. c Depends on the speed of heat transfer from body core to skin to ambient environment.
  4. d Exposure to cold temperatures down to 55 °F or hot temperatures up to 130 °F. (Subject nude in dry air.)
  5. e K⁺, amino acids, Mg, P

5 Multiple choice questions

  1. Tissue that surrounds and supports neurons in the central nervous system; support, protect, and nourish the neurons.
  2. * Selective permeability
    * Active transport: excretion (waste removal), or secretion (product)
    * Adhesion
    * Communication (receptors)
    * Motility, movement of fluids
  3. * Basal Metabolic Rate
    * Shivering and non-shivering thermogenesis
    * Metabolism due to hormonal activity
    * Extra metabolism: stimulation of sympathetic nerves or cellular chemical activity
  4. Cytoplasm (in cell outside of nucleus); Nucleoplasm (in nucleus).
  5. Receptor; Control Center; Effector

5 True/False questions

  1. Destructive Feedback LoopFever at 108°: metabolic rate increases → more heat generated → further rise in body temp (repeat); temperature around 113° is fatal (body's proteins denature).


  2. Intracellular Fluid (ICF)Fluid found within the cells.


  3. Aldosterone (Sweating)This kidney targeted hormone allows an acclimatized person to sweat 2-3 L/hr while minimizing the loss of salt.


  4. ChillsPyrogens increase hypothalamic thermostat set point suddenly initiating a cascade of events: dermal vasoconstriction, shivering, piloerection, hot sensation due to chemical thermogenesis.


  5. PhysiologyGreek word phusiologia - knowledge of nature; study of chemical and physical processes that accounts for life functions; concerned with explaining the functioning of whole organisms.


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