title: Smooth muscle constriction and mechanisms of gas trapping.
mesh_terms: D000336:Aerosols; D000403:Airway Resistance; D000818:Animals; D001980:Bronchi / Q000502:physiology*; D004285:Dogs; D009129:Muscle Tonus; D009130:Muscle, Smooth / Q000502:physiology*; D012115:Residual Volume; D012119:Respiration; D014630:Vagus Nerve / Q000502:physiology; D014797:Vital Capacity
chemical_list: D000336:Aerosols