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This Concept Map, created with IHMC CmapTools, has information related to: Heart, Heart Rate determined by depolarization rate of autorhythmic cells, Cardiac Output is a function of Stroke Volume, larger diameter & can't contract differs from cardiac muscle, AV Bundle in Conduction fibers, Cardiac Output is a function of Heart Rate, Ventricular Systole which is longer, pacemaker cells controls electric signals, force of contraction of cardiac muscle is influenced by Length-tension relationship: Starling's Law, Venous Return is aided by Skeletal muscle pump & Respiratory pump, Sympathetic System works by Venous Return, depolarization rate of autorhythmic cells is slowed by Parasympathetic System, More blood in EDV, Conduction fibers have larger diameter & can't contract, Sympathetic System works by Increasing Ca+ diffusion into cardiac cells, contraction result in larger SV, Atrial-Ventricular Diastole filled with Blood by suction as muscle relaxes & stretches, Sympathetic System works by Increasing Na+ diffusion into cells; depolarizing, Ventricular Systole when blood pressure in ventricles is greater than blood pressure in Atria, pacemaker cells have larger diameter & can't contract, signal in pacemaker cells