what is SA node and AV node in heart circulation?
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what is SA node and AV node in heart circulation?
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SA node=The SA node the heart's natural pacemaker. SA is Sinoatrial node and also known as Sinus node.
AV node=The AV node, which controls the heart rate is one of the major elements in cardiac conduction system.AV node is known as atrioventricular node.
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