The dominant pacemaker of the human heart. Antegrade and retrograde activation of the heart.
D001145:Arrhythmias, Cardiac / Q000503:physiopathology*; D004562:Electrocardiography; D006325:Heart Atria; D006329:Heart Conduction System / Q000503:physiopathology*; D006352:Heart Ventricles; D006801:Humans; D012849:Sinoatrial Node / Q000503:physiopathology