A slight fall in arterial P_CO2 is a much stronger stimulus for increasing ventilation than a comparable fall in arterial P_O2.

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Quizplus · Accepted Answer

This statement is true. A slight fall in arterial CO2 levels (as represented by P_CO2) is a powerful stimulus for increasing ventilation, as it signals the body to breathe more in order to rid itself of excess CO2. In contrast, a slight fall in arterial oxygen levels (as represented by P_O2) is not as strong of a stimulus for increasing ventilation, as the body can compensate for short-term decreases in oxygen by increasing blood flow to the affected tissues.

A Slight Fall in Arterial PCO2 Is a Much Stronger

A Slight Fall in Arterial P_CO2 Is a Much Stronger