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The cardiac conduction system is responsible for initiating and coordinating the heartbeat through the generation and propagation of electrical impulses. It consists of the sinoatrial (SA) node, atrioventricular (AV) node, bundle of His, bundle branches, and Purkinje fibers. Abnormalities in any part of this system can disrupt the normal __________ ____ _______ ________ ______ ___ _______ ____ ___ _____ _________.
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