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6. How much does plasma volume reduce by in the first 24hrs in space?
7. How many miles above the Earth has a field strength of 89% of what it is on Earth?
8. What is the gravitational force on earth?
- 9.81ms
- 9.18ms
- 9ms
- 10.81ms
9. What is not a way that immune function could have been affected?
- Lack of light
- Physical stress
- Mechanical forces
- Emotional stress
10. What is the rate of loss of bone in space?
- 1-2% per month
- 3-4% per month
- 5-10% per month
- 8-12% per month
11. Distension of vascular baroreceptors leads to what occurring to the renin-angiotensin system?
- No change
- Reduction
- Increase
12. How does microgravity affect lymphocyte, NK and T cell activation?
- No effect
- Decreases
- Increases
13. Why are astronauts prone to fainting on return to Earth?
- More gravity
- High blood pressure
- Redistribution of blood flow back to legs
- Much more light
14. Higher ambient CO2 leads to respiratory acidosis, which doesn't causes a loss of what?
- Phosphate
- Acetylcholine
- Calcium ions
- Bicarbonate
15. What is not a way that psychosocial effects can be countered?
- Time - wears off naturally
- Rigorous selection process
- Sleeping medication
16. What is the condition called when a subject is in a zone of little gravity and appears weightless?
- Hyperthermic
- Hypoxic
- Microgravity
- Hyperbaric
17. What is not a way to counter fluid redistributions?
- Negative pressure suits
- Isotonic fluids to bulk plasma volume
- Nutritional supplements
- Exercise during microgravity
18. High light levels prevent reabsorption of calcium ions
19. The loss of bone will always be reversible on return to Earth
20. By how much does blood volume decrease by?