Conducting system of heart consists of Sinoarterial (SA) Node, Internodal Pathway, Atrioventricular (AV) node, His Bundle. Bundle branches and Purkinje Fibers. PACEMAKER POTENTIAL Leakiness of Sinus Nodal fibers to Sodium and Calcium causes self-excitation. Tenth of second after the action potential is over–> More Potassium channels close The inward leaking Sodium (‘FUNNY CURRENT’) and CalciumContinue reading “CONDUCTING SYSTEM OF HEART”
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