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6. Cardiac output increases from ... to ...

  • 2 to 20l/min
  • 10 to 20l/min
  • 5 to 25l/min
  • 5 to 15l/min

7. What is not a reason that O2 uptake in lungs and delivery to muscles might be limited?

  • The long distance from lungs to muscles
  • Maximal attainable CO
  • Resistance to diffusion between RBC and mitochondria

8. The increase in arteriovenous difference is a result of?

  • Decreased venous oxygen content
  • Increased arterial oxygen content

9. During exercise, oxygen demands increase by

  • 5 x
  • 13 x
  • 10 x
  • 3 x

10. Cardiac output can be increased by how much with an elite level resting heart rate?

  • 3 x
  • 2 x
  • 7 x
  • 5 x

11. Training increases myoglobin by?

  • 80%
  • 70%
  • 60%
  • 50%

12. Plasma volume does what with endurance training?

  • Increases
  • Decreases

13. Heart rate rises how with work rate?

  • Linearly
  • Exponentially

14. What is cardiac output's relationship with work rate?

  • Negative exponential
  • Positive exponential
  • Positive linear
  • Negative linear

15. Cardiac stroke volume increases during exercise by

  • 1.5 x
  • 3 x
  • 5 x

16. Almost all increase in stroke volume occurs at a ...

  • low work rate
  • high work rate
  • medium work rate

17. How does haemocrit change with endurance training?

  • Increases a lot
  • Decreases a lot
  • Decreases slightly
  • Increases slightly

18. What is a normal range to find max heart rate in?

  • 180-200
  • 150-170
  • 220-200

19. What is not a reason that stroke volume increases with increased work rate?

  • Reduced filling time
  • Increase in filling pressure
  • Increase in ventricular contractility

20. A 5 x increase in cardiac output can increase muscle blood flow by how much?

  • 2 x
  • 20 x
  • 5 x
  • 10 x