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Created with Fabric.js 1.4.5 Circulatory System Cardiac Muscle The circulatory system consists of the heart and blood vessels.It is responsible for sending blood to the lungs to get oxygen and to the digestive system to get nutrients. Cardiovascular System:Function: transports oxygen and carbon dioxide and removes waste and delivers nutrients, hormones. Heart: Located between the lungs, sternum, thoracic cavity and ribs. 3 Layers of the heart: Epicardium: this outermost most layer visceral pericardium and contains fat which helps to cushion the heartMyocardium: middle layer is the thickest layer of the wall and is made primarily of cardiac muscleEndocardium: the innermost layer is thin and very smooth and stretches as the heart pumps bloodArteries:are the strongest blood vessels. Contains smooth muscle carry blood away from the heart and are under high pressure.Vein: contain valves to prevent back flow from carrying blood towards the heart Blood flow through the heart: enters the right atrium of the heart through large veins the inferior and superior vena cava. From the right atrium the blood flows over the tricuspid valve into the right ventricle.Then blood is pushed over he pulmonary valve into the pulmonary trunk Which carry blood to the lungs.The blood goes to the left atrium to the bicupid valve into the left ventricle Then blood travels to the aorta whichdistributes blood into its branches and throughout the body. Artery Maintain Homeostasis: carries nutrients to each part of the body.Blood carries away waste. regulate body temputure , balance of ph level, carries hormones
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