PHYS EXAM3 to remember slides TEMP

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ffloyd
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118372
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PHYS EXAM3 to remember slides TEMP
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2011-11-21 17:46:18
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PHYS EXAM3 remember slides TEMP
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PHYS EXAM3 to remember slides TEMP
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  1. Maintaining body temp within a narrow range is critical for the proper function of _________ in the body
    proteins/enzymes
  2. "Normal" body temps vary depending on ______, _______, ________, _________
    gender, time of day, repro cycle, the individual
  3. Body temps above ________ and below ________ can cause serious damage
    410C ; 250 C
  4. Metabolism is ineffiecient; roughly 80% of burned energy is converted to _____ rather than _____.
    heat rather than useful work
  5. Metabolism can change with what 5 variables?
    size, gender, feeding state, shivering thermogenesis, non-shiving thermogenesis
  6. ______________ convert energy stored in a proton gradient into heat
    Uncoupling proteins
  7. Uncoupling protein 2 (UCP2) is found in ___________.
    white and brown adipose tissue ; cardiac and skeletal muscles ; beta cells
  8. Uncoupling protein 1 (UPC1) allows for _________ and is only found in brown adipose tissue
    non-shivering thermogenesis
  9. UPC2 may play a role in __________ removal
    reactive oxygen species
  10. What is the consequence of increased expression of UCP2 in beta cells?
    reduced insulin production in response to glucose ---> type II diabetes
  11. metabolic heat = __________ x __________x________
    metabolic heat = metabolic rate (W/m2 ) x surface area (m2 ) x (1-efficiency)
  12. The change in our body temp depends on what 5 processes?
    • 1) we gain heat by metabolism
    • 2) we lose heat by convection
    • 3) we gain/lose heat by convection
    • 4) we gain/lose heat by conduction
    • 5) we gain/lose heat by radiation
  13. Evaporative heat depends on _______________; __________________ and ____________________.
    the difference in water vapor pressure between the skin and surrounding air ; the amount of skin that is exposed to the air ; air speed
  14. Convective heat exchange in humans depends on what 3 factors?
    • 1) the temp difference between the air close to the skin and surrounding air
    • 2) the surface area of skin exposed to air
    • 3) the convective heat transfer coefficient, hc
  15. Conductive heat exchange in humans depends on what 3 factors?
    • 1) the temp difference between the skin and surface
    • 2) the surface are of skin touching the surface
    • 3) the conductive heat transfer coefficient, hk
  16. Radiative heat can be divided into 2 categories : solar "_________" and terrestrial "_______"
    solar "short-wave" and terrestrial "long-wave"
  17. Just memorize the following...

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