The Different Organs Of The Cardiovascular System

917 WordsDec 9, 20174 Pages
The Cardiovascular system, also known as the circulatory system, includes the heart and its vessels. Its purpose is to circulate blood throughout the body and its cells, delivering needed substances and removing waste. The different organs of the cardiovascular system include the heart and its blood vessels, which are capillaries, arteries and veins. There are two parts to the cardiovascular system, pulmonary circulation and systemic circulation. Pulmonary circulation is between the heart and the lungs. The heart sends deoxygenated blood out the right ventricle through the left pulmonary artery, into the lungs. The lungs then oxygenate the blood and send it back to the heart through the right pulmonary artery. The oxygenated blood…show more content…
The heart is divided in half by the septum and has four chambers; right and left atria’s and the right and left ventricles. The heart also has four values to ensure the blood flows throughout the chambers properly these are called the; tricuspid valve, mitral valve, pulmonary valve and the aortic valve. All of those are surrounded by the thick wall of the heart with three layers. The endocardium is the inner smooth layer surrounding each chamber. The myocardium is the thick muscular middle layer, the muscular wall of this layer allows the heart to contract and pump the blood. The epicardium layer is the outer layer of the heart. Since the heart is a muscle it also needs its own supply of the blood circulating around it. Once the blood is oxygenated and travels through the aortic valve. There are two sets of arteries, the left main coronary artery and the right coronary artery, that bring the blood back around through the heart muscle. Blockage to any of these arteries will trigger a myocardial infarction, commonly known as a heart attack. A heart attack will occur when the flow of oxygenated blood is blocked, stopping the muscle from receiving oxygen. Blockage to your coronary arteries most commonly occurs due to plaque buildup over time. If left untreated that part of the muscle will die. Warning signs and symptoms of a heart attack can occur days, even weeks in before the heart attack. Symptoms can
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