Blood O₂ levels A) are more important than CO₂ levels in the regulation of respiration. B) need to change only slightly to cause a change in respiration rate. C) within the normal PO₂ range have little effect on regulation of respiration. D) in venous blood and arterial blood are about the same. E) never change enough to influence respiration.

Question

Quizplus · Accepted Answer

Blood O2 levels within the normal PO2 range have little effect on the regulation of respiration because the body primarily regulates respiration based on CO2 levels and pH, which are more sensitive indicators of respiratory needs.

Blood O2 Levels

Blood O₂ Levels