Collateral ventilation.
D000402:Airway Obstruction / Q000503:physiopathology; D000403:Airway Resistance; D000818:Animals; D001784:Blood Gas Analysis; D001980:Bronchi / Q000503:physiopathology; D006801:Humans; D008170:Lung Compliance; D008173:Lung Diseases, Obstructive / Q000503:physiopathology; D008176:Lung Volume Measurements; D008878:Middle Lobe Syndrome / Q000503:physiopathology; D011650:Pulmonary Alveoli / Q000503:physiopathology* / Q000648:ultrastructure; D011653:Pulmonary Diffusing Capacity; D012123:Pulmonary Ventilation; D013045:Species Specificity; D014692:Ventilation-Perfusion Ratio