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Respiratory Volume; the lung volume representing the normal volume of air displaced between normal inspiration and expiration
Allows gas exchange to go on continuously even between breaths and helps to keep the alveoli open. Air still remaining in the lungs that cannot be voluntarily expelled.
Chronic Obstructive Pulmonary Disease
A nonreversible lung disease that is a combination of emphysema and chronic bronchitis; usually patients have been heavy cigarette smokers.
The alveoli enlarge as the walls of adjacent chambers break through, and chronic inflammation promotes fibrosis of the lungs.
The mucosa of the lower respiratory passages becomes severely inflamed and produces excessive amounts of mucus.
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