resp changes during exercise (b2- resp)

Question 1

Which of the following best explains the maintenance of normal arterial PO₂ and PCO₂ during strenuous exercise?

Answer 1

Increase in alveolar ventilation and pulmonary blood flow

Question 2

aerobic vs anaerobic exercise

Answer 2

Aerobic:
- Low-intensity, long-duration activities
- Energy from nutrients using oxygen

Anaerobic:
- High-intensity, short bursts with rest
- Energy from glycogen without oxygen, producing lactic acid