What Changes in Ventilatory Pattern Would Be Expected During the Third

Question

What changes in ventilatory pattern would be expected during the third stage of moderate exercise?
A) alveolar ventilation increases rapidly
B) alveolar ventilation returns to pre-exercise level
C) alveolar ventilation gradually increases until maximum ventilation is reached
D) alveolar ventilation stabilizes

Accepted Answer

During the third stage of moderate exercise, alveolar ventilation stabilizes as the body reaches a steady state where oxygen demand and carbon dioxide production are balanced by ventilation.