Closing volume refers to the lung volume at which:
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Correct answer: Small airways begin to close
Closing volume is the point during expiration when small airways start to close. It increases with age and lung disease.
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More Lung Volumes and Capacities questions
- Which lung volume remains relatively constant during exercise?
- Which parameter best reflects the elastic recoil of the lungs?
- Which lung capacity decreases with aging?
- Which volume is used to calculate total lung capacity?
- Which lung volume provides a reservoir for continuous gas exchange between breaths?
- Which volume is reduced first in early restrictive lung disease?