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Questions and Answers
What is the functional residual capacity?
What is the functional residual capacity?
- The air inspired with maximal effort
- The maximum volume of air remaining in the lungs after forceful expiration (correct)
- The amount of air moved during quiet breathing
- The maximum volume of air that can be forcefully expired
What is the vital capacity?
What is the vital capacity?
- The maximum volume of air that can be forcefully expired
- The maximum amount of air that can be exhaled after maximal inhalation (correct)
- The amount of air moved during quiet breathing
- The air inspired with maximal effort
What is inspiratory capacity?
What is inspiratory capacity?
- The air inspired with maximal effort
- The maximum volume of air that can be forcefully expired
- The amount of air moved during quiet breathing
- The sum of tidal volume and inspiratory reserve volume (correct)
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Study Notes
- Tidal volume is the amount of air moved during quiet breathing (500ml)
- Inspiratory reserve volume is the air inspired with maximal effort (3000ml)
- Expiratory reserve volume is the maximum volume of air that can be forcefully expired (1100ml)
- Residual volume is the volume of air remaining in the lungs after forceful expiration (1200ml)
- Inspiratory capacity equals tidal volume plus inspiratory reserve volume (3500ml)
- Functional residual capacity equals expiratory reserve volume plus residual volume (2300ml)
- Vital capacity is the maximum amount of air that can be exhaled after maximal inhalation
- Total lung capacity is the sum of all lung volumes (approximately 6 liters)
- Lung volumes and capacities can be measured using spirometry
- These measurements can be used to diagnose and monitor respiratory diseases.
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