During aerobic exercise, the partial pressure of oxygen in muscle cells will ________, thus the rate of diffusion of oxygen into the muscle tissue from the blood will ________.
A) decrease; increase
B) increase; decrease
C) not change; also not change
D) decrease; decrease

Question

Quizplus · Accepted Answer

During aerobic exercise, the partial pressure of oxygen in muscle cells decreases because oxygen is being consumed for energy production. This decrease in partial pressure creates a larger gradient between the oxygen in the blood and the oxygen in the muscle cells, thus increasing the rate of diffusion of oxygen into the muscle tissue.

During Aerobic Exercise, the Partial Pressure of Oxygen in Muscle