Physiology and First Aid (FW) Exam
Questions and Answers 100% Pass
1 . "The amount of gas dissolved in solution is directly proportional to the pressure of
the gas over the solution." is:
Levy's Law.
Boyle's Law.
Henry's Law.
Dalton's Law. - ✔✔Henry's Law.
2 . Henry's Law is demonstrated in the occurrence of:
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,Inflight tooth pain.
Decompression sickness.
Inflight ear block.
Histotoxic hypoxia. - ✔✔Decompression sickness.
3 . Under conditions of slow decompression (normal ascent):
Decompression sickness symptoms above 12,000 feet can be prevented by using 75%
oxygen.
Microscopic size nitrogen bubbles form in the tissues.
Inert gases effervesce.
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, Excess nitrogen is vented off harmlessly by the lungs. - ✔✔Excess nitrogen is vented off
harmlessly by the lungs.
4 . What is the most common manifestation of decompression sickness?
Central nervous system disorders.
Bends.
Chokes.
Creeps. - ✔✔Bends.
5 . The symptom of bends, dull, aching pain in the bones or joints:
Tends to be progressive and becomes worse if ascent is continued.
Tends to decrease if ascent is continued.
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Questions and Answers 100% Pass
1 . "The amount of gas dissolved in solution is directly proportional to the pressure of
the gas over the solution." is:
Levy's Law.
Boyle's Law.
Henry's Law.
Dalton's Law. - ✔✔Henry's Law.
2 . Henry's Law is demonstrated in the occurrence of:
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,Inflight tooth pain.
Decompression sickness.
Inflight ear block.
Histotoxic hypoxia. - ✔✔Decompression sickness.
3 . Under conditions of slow decompression (normal ascent):
Decompression sickness symptoms above 12,000 feet can be prevented by using 75%
oxygen.
Microscopic size nitrogen bubbles form in the tissues.
Inert gases effervesce.
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, Excess nitrogen is vented off harmlessly by the lungs. - ✔✔Excess nitrogen is vented off
harmlessly by the lungs.
4 . What is the most common manifestation of decompression sickness?
Central nervous system disorders.
Bends.
Chokes.
Creeps. - ✔✔Bends.
5 . The symptom of bends, dull, aching pain in the bones or joints:
Tends to be progressive and becomes worse if ascent is continued.
Tends to decrease if ascent is continued.
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