Which of the following situations will cause an increase in the single-breath carbon dioxide (SBCO₂)curve?
A) Decreased metabolic rate and decreased ventilation
B) Decreased metabolic rate and increased ventilation
C) Increased metabolic rate and increased ventilation
D) Increased metabolic rate and decreased ventilation

Question

Quizplus · Accepted Answer

The same cause for an increase in arterial partial pressure of carbon dioxide (PₐCO₂)will increase the single-breath carbon dioxide (SBCO₂)curve.An increase in metabolic rate will increase the carbon dioxide (CO₂)production in the body.This,accompanied by either no change in ventilation or a decrease in ventilation,will cause the amount of CO₂ in the body to increase and thus cause the amount of CO₂ exhaled to increase.The only combination that will do this is "D," increased metabolic rate and decreased ventilation.

Which of the Following Situations Will Cause an Increase in the Single-Breath