When, in the First Stage of Moderate Exercise, is There

Question

When, in the first stage of moderate exercise, is there an increase in alveolar ventilation?
A) one minute after onset of exercise
B) 30 seconds after onset of exercise
C) 15 seconds after onset of exercise
D) within seconds after onset of exercise

Accepted Answer

Alveolar ventilation increases almost immediately within seconds after the onset of moderate exercise to meet the increased oxygen demand and carbon dioxide removal needs of the body.