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6. Partial reduction of what substance can cause chemical destruction of cells?
- Helium
- Hydrogen
- Oxygen
- Nitrogen
7. The expansion of air when a diver descends causes what unwanted danger?
- Decompression sickness
- Oxygen toxicity
- Air embolism
- Nitrogen narcosis
8. What law states that the greater the pressure, the more gas will dissolve into liquid?
9. As depth increases, what happens to PO2?
10. Divers should not breathe in pure oxygen at depths more than what?
11. What type of diving is it when you swim underwater on one breath?
- Saturation diving
- Free diving
- SCUBA diving
12. Using helium has what effect on breathing resistance?
13. 1 ATA is equivalent to having how many miles of air above us?
14. Hyperventilation is a safe way of increases maximum breath hold time
15. What is the most common manifestation of the mammalian diving reflex?
- Decreased blood pressure
- Increased blood pressure
- Bradycardia
- Tachycardia
16. In saturation diving, divers live in steel chambers pressurised to what?
- The depth at which they are working
- Sea level
- An intermediate pressure
17. What gets stretched during air embolisms?
- Blood vessels
- Alveolar membranes
- Any cell membranes
18. What is PO2 at sea level?
19. Who's law says that as pressure increases, volume decreases?
- Boyles
- Coleslaw
- Daltons
- Henrys
20. Air embolisms can lead to a spontaneous pneumothorax