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</html><description>The myocardium of the heart can generate its own electrical impulse, an ability called automaticity. The Sinoatrial node (SA node) in the right atrium works like an internal pacemaker. This node generates electrical impulses at a rate of 60-100 times per minute. Each impulse travels through internodal pathways in the right and left atria and [&hellip;]</description></oembed>
