1. Explain how quiet exhalation is accomplished, and compare this to forced exhalation. Which spirometry measurements indicate quiet and forced exhalation.

2. High total volume minute volume during mild to moderate exercise is more accurately termed hyperpnea than hyperventilation. Distinguish between these two terms, and explain why this statement is true.

3. Define oxygen debt, and explain the functions of the oxygen debt.

4. Define the term hypoventilation, explaining its relationship to the carbon dioxide concentration of the blood plasma. Explain why a person could have a much lower total minute volume at rest than another person, without hypoventilating.

5. People who hyperventilate may get dizzy (due to cerebral casoconstriction), causing anxiety and further hyperventilation. Such people are sometimes urged to breathe into a paper bag. What good would this do? Explain the physiological mechanisms involved.