Which of the following factors does not directly affect breathing rate?
A)Partial pressure of oxygen in body fluids
B)Partial pressure of carbon dioxide in body fluids
C)Degree of lung tissue stretch
D)Size of residual volume

Question

Quizplus · Accepted Answer

The size of residual volume refers to the amount of air left in the lungs after exhalation, which does not directly affect breathing rate. The other factors listed (partial pressure of oxygen and carbon dioxide in body fluids, degree of lung tissue stretch) all play a role in regulating breathing rate.

Which of the Following Factors Does Not Directly Affect Breathing