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6. What is not a way that psychosocial effects can be countered?

  • Sleeping medication
  • Time - wears off naturally
  • Rigorous selection process

7. High light levels prevent reabsorption of calcium ions

  • False
  • True

8. What could not be playing a role in muscle atrophy?

  • Sub-optimal nutrition
  • Lack of loading on muscles
  • Lack of vitamin D
  • Stress

9. What is the condition called when a subject is in a zone of little gravity and appears weightless?

  • Hypoxic
  • Hyperbaric
  • Microgravity
  • Hyperthermic

10. What is not a way to counter fluid redistributions?

  • Isotonic fluids to bulk plasma volume
  • Nutritional supplements
  • Negative pressure suits
  • Exercise during microgravity

11. By how much does muscle fibre size reduce by?

  • 5-30%
  • 20-50%
  • 50-60%
  • 10%

12. How can immune dysregulation be countered?

  • Nutritional supplements
  • Time to adjust naturally
  • Exercise - elastic
  • Sleeping medication

13. What is not a way that immune function could have been affected?

  • Lack of light
  • Mechanical forces
  • Emotional stress
  • Physical stress

14. When might neurovestibular disturbances have a negative impact?

  • During important decisions
  • While in space
  • Take off

15. What happens to haemocrit from the reduction in plasma volume?

  • Increases
  • Decreases

16. What is not a way to counter bone loss in space?

  • Rigorous selection process
  • Elastic exercise
  • Dietary supplements

17. Disrupted circadian cycles has what negative effect?

  • Immune dysregulation
  • Psychosocial effects
  • Neurovestibular disturbances
  • Muscle atrophy

18. How does microgravity affect lymphocyte, NK and T cell activation?

  • No effect
  • Decreases
  • Increases

19. How much muscle atrophy can occur in 2 weeks of being in space?

  • 5%
  • 20%
  • 40%
  • 15%

20. What cannot counter neurovestibular disturbances?

  • Rigorous sleeping medication
  • Time
  • Anti nausea medication