title: Airway obstruction and collateral ventilation.
mesh_terms: D000402:Airway Obstruction / Q000150:complications; D000403:Airway Resistance; D000818:Animals; D001980:Bronchi / Q000033:anatomy & histology; D002245:Carbon Dioxide / Q000032:analysis / Q000097:blood; D004058:Diffusion; D006801:Humans; D008168:Lung / Q000033:anatomy & histology; D008170:Lung Compliance; D010100:Oxygen / Q000032:analysis / Q000097:blood; D010313:Partial Pressure; D011650:Pulmonary Alveoli / Q000033:anatomy & histology; D011656:Pulmonary Emphysema / Q000209:etiology; D011663:Pulmonary Surfactants / Q000502:physiology; D012119:Respiration; D012143:Respiratory Physiological Phenomena; D012140:Respiratory Tract Diseases; D013147:Spirometry
chemical_list: D011663:Pulmonary Surfactants; D002245:Carbon Dioxide; D010100:Oxygen