title: The physiologic factors affecting regional ventilation and perfusion.
mesh_terms: D000402:Airway Obstruction / Q000503:physiopathology; D001981:Bronchial Arteries / Q000503:physiopathology; D006112:Gravitation; D006801:Humans; D000860:Hypoxia / Q000503:physiopathology; D008168:Lung / Q000098:blood supply / Q000502:physiology*; D008171:Lung Diseases / Q000503:physiopathology; D008833:Microcirculation; D010996:Pleural Effusion / Q000503:physiopathology; D011650:Pulmonary Alveoli / Q000033:anatomy & histology / Q000503:physiopathology; D011652:Pulmonary Circulation; D011663:Pulmonary Surfactants; D012123:Pulmonary Ventilation; D011877:Radionuclide Imaging; D012119:Respiration; D012126:Respiratory Dead Space; D012140:Respiratory Tract Diseases / Q000175:diagnosis; D013147:Spirometry
chemical_list: D011663:Pulmonary Surfactants