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This Concept Map, created with IHMC CmapTools, has information related to: Erin Moran Draft, pacemaker cells which send out electric signals, The heart divides into a right chamber, 5 liters of blood in your body is equilvalent to 1.5 gallons of milk, blood out of the heart carried by the arteries, pacemaker cells regulating your heart beat, a ventricle pumps blood out of the heart, 5 liters of blood in your body through the 100,000 kilometers of blood vessels in your body, SA node is like the on switch of heart contraction, the heart's conduction system including the Bundle of HIS and bundle fibers, left chamber which includes an atrium, an atrium receives blood coming to the heart, left atrium as oxygenated blood, The heart is a hollow, muscular organ, Purkinje Fibers act like mailmen to deliver the impulse to the ventricles, right ventricle sends the blood to the lungs, The heart contains pacemaker cells, your heart beat stays healthy with a diet low in fat, veins to be emptied into the right atrium, 11 ounces or about as much as a can of soup, lub-dub sound heard with a stethoscope