title: The functional geometry of the bronchi. The relationship between changes in external diameter and calibre, and a consideration of the passive role played by the mucosa in bronchoconstriction.
mesh_terms: D000109:Acetylcholine / Q000494:pharmacology; D000403:Airway Resistance; D001249:Asthma / Q000503:physiopathology*; D001980:Bronchi / Q000187:drug effects / Q000502:physiology* / Q000503:physiopathology; D001991:Bronchitis / Q000503:physiopathology*; D001993:Bronchodilator Agents / Q000494:pharmacology; D006632:Histamine / Q000494:pharmacology; D006801:Humans; D008954:Models, Biological; D009092:Mucous Membrane / Q000502:physiology; D009119:Muscle Contraction
chemical_list: D001993:Bronchodilator Agents; D006632:Histamine; D000109:Acetylcholine