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Cardiac conduction Picture and Definition
Cardiac tissue where the heart beat originates and spreads to
reach all parts of the myocardium. The structures that make up the conduction system are
the sinoatrial node, the internodal atrial pathways, the atrioventricular node, the bundle
of His and its branches, and the Purkinje system. The various parts of the conduction
system and, under abnormal conditions, parts of the myocardium, are capable of spontaneous
discharge |