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This Concept Map, created with IHMC CmapTools, has information related to: Patrick Reems, bundle of his spreads down Right and left bundle branches, Peter family history of heart disease, heart disease suggests genetic pathology with heart Heart, Coughing stimulates Vagus nerve, funny sodium channels T-Ca channels brings cell back to resting potential, atrioventricular node causes opening of K+ channels, Heart rate dependent on sinoatrial node, purkinje fibers causes contraction of left ventricle, atrioventricular node spreads down bundle of his, 4 chambers including left ventricle, adenosine receptor which normally slows autorhythmicity of sinoatrial node, atrioventricular node slower conduction because of length constant, sinoatrial node impulse initated by opening of L-type Ca++, Right and left bundle branches causes opening of sodium channels, purkinje fibers causes contraction of right ventricle, potassium channels plateau phased caused by opening of L-type channels, Peter complains of palpitation, depolarization travels to atrioventricular node, RyR receptors increases calcium and causes depolarization, caffeine antagonist for and inhibits adenosine receptor