Which of the following are true of the respiratory exchange ratio?
I.It is the ratio of alveolar CO₂ excretion to blood oxygen uptake.
II.R = VCO₂/VO₂
III.It is the ratio of oxygen uptake to blood alveolar CO₂excretion.
IV.Its value is normally approximately 0.8.

Question

Quizplus · Accepted Answer

The ratio of alveolar CO₂ excretion (VCO₂) to blood oxygen uptake (VO₂) is called the respiratory exchange ratio (R), and its value is normally approximately 0.8 (R = VCO₂/VO₂ = 200/250 = 0.8).

Which of the Following Are True of the Respiratory Exchange