Heart Blocks, Anatomy and ECG Reading, Animation.

The heart electrical signals are initiated in its natural pacemaker – the sinoatrial node, or SA node, and travel through the atria to reach the atrioventricular node, or AV node. The AV node is the gateway to the ventricles. The AV node passes the signals onto the bundle of His. This bundle is then dividedRead More Heart Blocks, Anatomy and ECG Reading, Animation.