A spirometer cannot measure the absolute volume of air in the lungs because the volume of air remaining after a maximal expiration is unknown.
Un espirómetro no puede medir el volumen absoluto de aire en los pulmones porque no se conoce el volumen de aire que permanece después de una espiración máxima.
| Front | Explain why a spirometer cannot measure absolute lung volume. |
|---|---|
| Back | There is no way of knowing the volume of air remaining in the lungs after a maximal expiration. |
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