583 physiology

Card Set Information

583 physiology
2012-12-15 15:33:46
583 physiology

583 physiology
Show Answers:

  1. How energy is stored
    Essential for muscle contraction
  2. 􀀹 Terminal bond broken down for energy
    􀀹 Requires ATPase enzyme and water
    􀀹 Forms ADP, free phosphate and energy
  3. Immediate source of energy (10-15 seconds)
    Hydrolysis of ATP (water & ATP)
  4. Short term energy
    • Anaerobic Glycolysis
    • -without use of oxygen
    • -breakdown of glucose to produce ATP
  5. Associated with muscle fatigue
    Accumulation dependent upon balance betweenproduction in muscle and removal by other tissues
  6. Long term energy source
    • -uses oxygen
    • -Breakdown of carbohydrates, fats and proteins under aerobic conditions so that large amounts of ATP can be produced
  7. True or false:
    Brain can metabolize only carbohydrates and lactate under aerobic conditions
    True, because it can convert it to pyruvate which creates 2 ATP
  8. What is an important biomarker for aerobic metabolism?
    Cytochrome oxidase
  9. How do you determine amount of oxygen person can utilize?
    Aerobic metabolism/capacity
  10. When does lactate occur?
    When there isn't enough oxygen
  11. Energy expenditure when you wake up in the morning
    Basal metabolic rate
  12. How much oxygen a person can use in a minute
    • VO2 Max
    • -reflects cardio fitness
  13. Ratio between volume of carbon dioxide produced an oxygen consumed at tissue level
    Respiratory Quotient (RQ)
  14. RQ = _____ unless the person is working at a high intensity
    RER (respiratory exchange ratio)
  15. At high intensity exercise you burn ____
  16. True or false: 
    Body has to work harder to digest proteins
  17. 1 ______ = 3.5 ml 02/kg/min assumed as teh resting energy expenditure
    MET (metabolic equivalent)
  18. What is necessary for brain energy?
  19. True or false: 
    There is an inverse relationship between aerobic and anaerobic activity.
    True. Low intensity is aerobic, while high intensity is anaerobic.
  20. What is the optimal prescription for fat loss?
    • Long
    • Slow
    • Distance
  21. True or false:
    You should not overload the metabolic pathway to increase its capacity for energy production
    False, you MUST overload the pathway - no pain, no gain.
  22. Which energy source (immediate, short or long term) increases creatine kinase
    Immediate. Used as a biological marker for tissue damage
  23. Which energy source (immediate, short or long term) increases capacity of heart and lungs to transport and deliver oxygen to various tissues
    Long term
  24. How does muscle spasticity influence energy expenditure?
    • Increases the energy expenditure of routine physical tasks
    • Multi-tasking can trigger more severe spasticity
    • Can increase the cardiorespiratory stress of physical activity
    • Results in premature fatigue
  25. What can occur as a result of:
    Reduced physicalactivity
    Joint immobilization
    Decreased capacityto produce energyunder anaerobic  and aerobic conditions
    muscle atrophy