A pressurized airplane cabin and an oxygen tent over a patient in a hospital both impact the respiration rate of a person. How do these compare?
A. Both use the same mechanism to force hemoglobin to increase affinity for oxygen.
B. The oxygen tent increases concentration of O2 while the airplane maintains total air pressure without changing concentrations.
C. The oxygen tent and the airplane increase the air pressure to increase the PCO2.
D. The oxygen tent and airplane cabin pressure lowers the partial pressures for normal breathing.
Answer: B
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