The Cardiovascular System Of The Heart And The System

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“Homeostasis comprises the dynamic processes that enable optimum conditions to be maintained for cells, in spite of continual changes taking place internally and externally” (Doherthy & Foudy, 2006, p. 26). I chose the cardiovascular system based on the fact that blood has to circulate to all of the other systems to help keep tissues and organs functioning. The organ of the cardiovascular system is the heart and the system also has arteries veins, and capillaries which are the blood vessels. The main tissues that are in the cardiovascular system are the epithelial tissue, muscle tissue, nervous tissue, and connective tissue. The cells that are associated with this system are red blood cells, white blood cells, platelets and then plasma a…show more content…
The systemic circulation, “provides organs, tissues and cells with blood so that they get oxygen and other vital substances” (PubMed Health, 2012). While the pulmonary circulation “is where the fresh oxygen we breathe in enters the blood… and at the same time, carbon dioxide is released from the blood” (PubMed Health, 2012). The arteries have oxygen rich blood while the veins have oxygen poor blood. Blood circulation begins when the heart relaxes, blood flows from the two chambers of the heart, known as the atria, into the lower two chambers, the ventricles, which then expand. The systematic circulation has the left ventricle pumping oxygen rich blood into the aorta. The blood then travels from the main artery to the other arteries in the capillary network. The blood will be release the oxygen, nutrients and takes the carbon dioxide and waste. After that the blood travels in the veins to the right atrium and into the right ventricle. This leads to the pulmonary circulation, which “begins with the right ventricle pumping blood that has little oxygen into the pulmonary artery, which branches off into the other arteries and capillaries” (PubMed Health, 2012). The capillaries are where the carbon dioxide is released from the blood into the pulmonary vesicles and fresh oxygen enters the bloodstream. As we breathe out carbon dioxide is released from the body and oxygen enters the lungs when we breathe in. As the “oxygen rich blood travels through the pulmonary vein and
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