Which of the Following Statements Regarding Control of Respiration Is

question 88

Multiple Choice

Which of the following statements regarding control of respiration is correct?

• A) A slight decrease in arterial P_O2 is a stronger stimulus for increased ventilation than is a comparable decrease in arterial P_CO2.
• B) The most important signal for regulating ventilation is the H⁺ concentration of arterial blood.
• C) Increased concentrations of lactic acid stimulate ventilation primarily by acting on peripheral chemoreceptors.
• D) An increase in the HCO₃^- concentration in blood stimulates ventilation.
• E) At high altitude, a decrease in P_CO2 of the blood stimulates an increase in ventilation.

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