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This Concept Map, created with IHMC CmapTools, has information related to: heart, Ventricular Systole when blood pressure in ventricles is greater than blood pressure in Atria, depolarization rate of autorhythmic cells is speed up by Sympathetic System, Stroke Volume determined by force of contraction of cardiac muscle, Purkinje fibers in Conduction fibers, Atrial blood pressure is greater than pressure in ventricle result in AV open, Length-tension relationship: Starling's Law varies with Venous Return, Ventricular Systole leads to Atrial-Ventricular Diastole, SA node receive signal, signal in pacemaker cells, Ventricular Diastole when Atrial blood pressure is greater than pressure in ventricle, Sympathetic System works by Venous Return, Conduction fibers have larger diameter & can't contract, force of contraction of cardiac muscle is influenced by Length-tension relationship: Starling's Law, AV Bundle in Conduction fibers, More blood in EDV, force of contraction of cardiac muscle is influenced by Increasing Ca+ diffusion into cardiac cells, EDV make stronger contraction, contraction result in larger SV, Heart Rate determined by depolarization rate of autorhythmic cells, Atrial Systole which is short