Ventilation, smoking and exercise Quiz
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5 questions, one answer each
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1. Which describes what happens during inhalation?
- A. The diaphragm relaxes and the chest volume decreases
- B. The diaphragm contracts and the chest volume increases
- C. The ribs move down and in
- D. The pressure in the chest rises above atmospheric pressure
2. Which gas is found in a higher percentage in exhaled air than in inhaled air?
- A. Oxygen
- B. Nitrogen
- C. Carbon dioxide
- D. Neon
3. Which substance in tobacco smoke reduces the oxygen carried by the blood?
- A. Tar
- B. Nicotine
- C. Ethanol
- D. Carbon monoxide
4. Why does breathing rate increase during exercise?
- A. Muscles respire faster and need more oxygen
- B. The lungs get smaller
- C. The heart stops pumping
- D. Tar builds up in the lungs
5. Which disease involves the breakdown of the alveolus walls?
- A. Bronchitis
- B. Emphysema
- C. Asthma
- D. The common cold