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Cardiac Conduction System
a system of specialized cardiac muscle fibers that conduct impulses from the SA node throughout the myocardium
Specialized tissue in the wall of the right atrium that initiates cardiac cycles; the pacemaker
SA node; initiates heart rhythmic contractions
Atrioventricular node (AV node)
specialized mass of cardiac muscle fibers in the interatrial septum of the heart; conducts cardiac impulses from the SA node to the AV bundle
AV bundle (bundle of HIS)
group of specialized muscle fibers that conducts impulses from the AV node to Purkinje fibers in ventricular muscle of heart
Muscle fibers that conduct the cardiac impulse from the AV bundle to the ventricular walls
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