Question

During moderate exercise, increased arterial PCO2 and hydrogen ion concentration and decreased arterial PO2 are all readily demonstrated, and thus are probably the signals for increased ventilation.

a-true
b-false

Answer 1

During moderate exercise, increased arterial PCO2 and hydrogen ion concentration and decreased arterial PO2 are not the signals for increased ventilation.

Step-by-step explanation:

The statement in the question is false. During moderate exercise, increased arterial PCO2 and hydrogen ion concentration and decreased arterial PO2 are not the signals for increased ventilation. The primary signal for increased ventilation during exercise is an increase in arterial PCO2, which stimulates the respiratory centers in the brain to increase the rate and depth of breathing. This increase in ventilation helps to remove carbon dioxide from the blood at a quicker rate and provide enough oxygen to meet the increased demand during exercise.