title: Regulation of the circulation. I.
mesh_terms: D000818:Animals; D001285:Atropine / Q000494:pharmacology; D001775:Blood Circulation; D001794:Blood Pressure; D002118:Calcium / Q000502:physiology; D002302:Cardiac Output; D002306:Cardiac Volume; D002346:Carotid Sinus / Q000187:drug effects / Q000502:physiology; D002415:Cats; D004285:Dogs; D005246:Feedback; D006321:Heart / Q000502:physiology* / Q000503:physiopathology; D006329:Heart Conduction System / Q000502:physiology; D006331:Heart Diseases / Q000503:physiopathology*; D006339:Heart Rate; D006801:Humans; D010275:Parasympathetic Nervous System / Q000502:physiology / Q000503:physiopathology; D011311:Pressoreceptors / Q000502:physiology; D011433:Propranolol / Q000494:pharmacology; D012018:Reflex; D012849:Sinoatrial Node / Q000502:physiology; D013564:Sympathetic Nervous System / Q000502:physiology; D009435:Synaptic Transmission; D013610:Tachycardia / Q000503:physiopathology
chemical_list: D001285:Atropine; D011433:Propranolol; D002118:Calcium