Respiratory Volume; the lung volume representing the normal volume of air displaced between normal inspiration and expiration
Expiratory Reserve Volume
The amount of air that can be forcibly exhaled after tidal expiration.
Inspiratory Reserve Volume
The amount of air that can be taken in forcibly over the tidal volume.
The total amount of exchangeable air.
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.
Deficiency in the amount of oxygen reaching the tissues.
If breathing stops for an extended time and there is bluish discoloration of the skin.
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.
Carcinoma of the lungs; one of the commonest forms of cancer.
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