10. If given a diagram of the heart, such as the one below, be able to identify each of the following parts of the conduction system: • sinoatrial (SA) node • spread of SA through the 2 atria • atrioventricular (AV) node • AV bundle (=bundle of His) • bundle branches Purkinje fibers • 11. Trace the flow of impulses through the conduction system (step by step) and include at what points the following happen: 2 atria contract together AV node delay occurs

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