Muscle Fibre Types

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Author:
faheycg
ID:
200620
Filename:
Muscle Fibre Types
Updated:
2013-02-14 17:39:00
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Muscle Fibre Types
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Muscle Fibre Types
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  1. What is the contraction time of Type I muscle fibres?
    Slow
  2. What is the contraction time of Type IIa muscle fibres?
    Fast
  3. What is the contraction time of Type IIb muscle fibres?
    Very fast
  4. What is the size (cross section) of Type I muscle fibres?
    Small
  5. What is the size (cross section) of Type IIa muscle fibres?
    Medium
  6. What is the size (cross section) of Type IIb muscle fibres?
    Larger
  7. What is the size of the motor neuron supply to Type I muscle fibres?
    Small
  8. What is the size of the motor neuron supply to Type IIa muscle fibres?
    Large
  9. What is the size of the motor neuron supply to Type IIb muscle fibres?
    Very large
  10. What is Type I muscle fibres resistance to fatigue?
    High
  11. What is Type IIa muscle fibres resistance to fatigue?
    Intermediate
  12. What is Type IIb muscle fibres resistance to fatigue?
    Low
  13. What activity are Type I muscle fibres used for?
    Aerobic
  14. What activity are Type IIa muscle fibres used for?
    Longer term anaerobic
  15. What activity are Type IIb muscle fibres used for?
    Short term anaerobic
  16. What is the level of force produced by Type I muscle fibres?
    Low
  17. What is the level of force produced by Type IIa muscle fibres?
    High
  18. What is the level of force produced by Type IIb muscle fibres?
    Very high
  19. What is the mitochondrial density of Type I muscle fibres?
    High
  20. What is the mitochondrial density of Type IIa muscle fibres?
    High
  21. What is the mitochondrial density of Type IIb muscle fibres?
    Low
  22. What is the capillary density of Type I muscle fibres?
    High
  23. What is the capillary density of Type IIa muscle fibres?
    High
  24. What is the capillary density of Type IIb muscle fibres?
    Low
  25. What is the aerobic capacity of Type I muscle fibres?
    High
  26. What is the aerobic capacity of Type IIa muscle fibres?
    High
  27. What is the aerobic capacity of Type IIb muscle fibres?
    Low
  28. What is the glycolytic capacity of Type I muscle fibres?
    Low
  29. What is the glycolytic capacity of Type IIa muscle fibres?
    High
  30. What is the glycolytic capacity of Type IIb muscle fibres?
    High
  31. What is the major fuel storage of Type I muscle fibres?
    Fat and glycogen
  32. What is the major fuel storage of Type IIa muscle fibres?
    CP and Glycogen
  33. What is the major fuel storage of Type IIb muscle fibres?
    ATP and CP
  34. What are the characteristic of Type I muscle fibres?
    Fixed
  35. What are the characteristic of Type IIa muscle fibres?
    Somewhat trainable
  36. What are the characteristic of Type IIb muscle fibres?
    Fixed

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