Which of the Following Statements Regarding Control of Respiration Is

question 65

Multiple Choice

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

• A)A slight decrease in arterial PO₂ is a stronger stimulus for increased ventilation than is a comparable decrease in arterial PCO₂.
• 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 PCO₂ of the blood stimulates an increase in ventilation.