title: Nervous control of airway muscle tone.
mesh_terms: D000818:Animals; D002395:Catecholamines / Q000502:physiology; D002417:Cattle; D006168:Guinea Pigs; D006801:Humans; D008168:Lung / Q000294:innervation / Q000502:physiology; D009433:Neural Inhibition; D018377:Neurotransmitter Agents / Q000502:physiology; D051381:Rats; D009435:Synaptic Transmission; D014132:Trachea / Q000294:innervation*; D014660:Vasoactive Intestinal Peptide / Q000502:physiology
chemical_list: D002395:Catecholamines; D018377:Neurotransmitter Agents; D014660:Vasoactive Intestinal Peptide