Regarding the relationships between the rates of oxygen consumption/carbon dioxide production and alveolar ventilation, which of these statements is TRUE?
A. In hypoventilation, alveolar PCO2 decreases below resting levels.
B. In hyperventilation, alveolar PCO2 can decrease to zero.
C. An increase in ventilation with a matching increase in metabolism is called hyperventilation.
D. A decrease in metabolism without a similar decrease in alveolar ventilation would result in hyperventilation.
E. Increased ventilation without a similar increase in metabolism is called hypoventilation.
Answer: D
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