title: The origin of the heart beat: a tale of frogs, jellyfish, and turtles.
authors.forename: W B
authors.initials: WB
authors.lastname: Fye
mesh_terms: D000818:Animals; D002309:Cardiology / Q000266:history; D004285:Dogs; D005060:Europe; D006321:Heart / Q000502:physiology*; D006329:Heart Conduction System / Q000502:physiology; D049670:History, 17th Century; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D049690:History, Ancient; D006801:Humans; D009200:Myocardial Contraction; D011817:Rabbits; D011898:Ranidae / Q000502:physiology; D037401:Scyphozoa / Q000502:physiology; D014426:Turtles / Q000502:physiology