Respiration: alveolar gas exchange.
D000818:Animals; D001639:Bicarbonates / Q000097:blood; D002196:Capillaries; D002245:Carbon Dioxide / Q000097:blood; D002302:Cardiac Output; D004058:Diffusion; D005459:Fluorides; D006371:Helium; D006454:Hemoglobins / Q000378:metabolism; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008168:Lung / Q000098:blood supply; D008954:Models, Biological; D009356:Neon; D010101:Oxygen Consumption; D005082:Physical Exertion; D011650:Pulmonary Alveoli / Q000502:physiology*; D011651:Pulmonary Artery; D011652:Pulmonary Circulation; D012123:Pulmonary Ventilation; D012119:Respiration; D012126:Respiratory Dead Space; D013455:Sulfur; D014692:Ventilation-Perfusion Ratio
D001639:Bicarbonates; D006454:Hemoglobins; D002245:Carbon Dioxide; D006371:Helium; D009356:Neon; D013455:Sulfur; D005459:Fluorides