The adrenal medulla and the airway.
D000313:Adrenal Medulla / Q000502:physiology* / Q000503:physiopathology; D000315:Adrenalectomy; D000403:Airway Resistance / Q000187:drug effects; D000818:Animals; D001249:Asthma / Q000503:physiopathology; D001341:Autonomic Nervous System / Q000502:physiology; D001980:Bronchi / Q000502:physiology; D002415:Cats; D004285:Dogs; D004837:Epinephrine / Q000502:physiology; D006801:Humans; D009638:Norepinephrine / Q000502:physiology; D005082:Physical Exertion; D011943:Receptors, Adrenergic, beta / Q000502:physiology; D012143:Respiratory Physiological Phenomena
D011943:Receptors, Adrenergic, beta; D009638:Norepinephrine; D004837:Epinephrine