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The Atrioventricular node (AV node) is an area of specialized tissue between the atria and the ventricles of the heart which conducts the normal electrical impulse from the atria to the ventricles.[1] In other words, the SA node initiates the heartbeat.

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References[]

  1. various (n.d.). Sinoatrial node. Wikipedia. Retrieved on 2008-09-29.
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