Which statement correctly defines vital capacity?
Correct answer: A. The maximum air exhaled after maximum inhalation
- A. The maximum air exhaled after maximum inhalation
- B. The air remaining after maximum exhalation
- C. The air moved during one quiet breath
- D. The total air in the lungs after normal inhalation
Explanation
Vital capacity is the greatest volume exhaled after a person inhales as deeply as possible. Residual volume remains after maximal exhalation, while tidal volume is the air moved during quiet breathing.
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About Respiratory System
The respiratory system includes the air passages, lungs, pleura, alveoli and the mechanics of breathing. It explains pulmonary ventilation, gas exchange, oxygen and carbon dioxide transport, regulation of breathing, and the difference between external respiration in the lungs and internal respiration in body tissues.
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