The phases of the cardiac cycle.
D004562:Electrocardiography; D006321:Heart / Q000502:physiology*; D006326:Heart Auscultation; D006351:Heart Valves / Q000502:physiology; D006439:Hemodynamics; D006801:Humans; D008722:Methods; D009119:Muscle Contraction; D010701:Phonocardiography