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Circulatory System

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Olivia Albrecht

on 8 March 2013

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Transcript of Circulatory System

First, you must know what this cycle is. Does the circulatory system confuse you? Or do you not even know what the circulatory system is? Well, let me show you... The circulatory System is the system in which blood is pumped and brought to all parts of the body. Second, you should know the purpose of distributing blood to the different organs. One of the purposes is to transport oxygen. Oxygen When blood carries oxygen, it is red. After the blood has given all its oxygen to the organs, they use it, and give back carbon dioxide (CO2). At this stage, the blood is blue. The blood picks up its oxygen from the air you breathe in. The oxygenated blood is brought to the heart through the pulmonary veins on either side. Pulmonary Veins The blood is brought by the Pulmonary Veins from both parts of the lungs to the Left Atrium. It flows through the valve leading to the Left Ventricle. ... from either side of the lungs. Pulmonary Veins A Simplified Version Lungs Heart Body The three main parts of the Circulatory System are the.... The blood gets oxygen from the air that is breathed in and brings it to the heart. The oxygenated blood is pumped through the heart and to the rest of the body. In the rest of the body, the organs use up the oxygen and give back CO2. Now the deoxygenated blood (containing CO2) needs to go back to the heart so that it can be pumped back to the Lungs. Here is where the blood drops off the CO2, which is breathed out, and takes the oxygen back with it to the heart. Now let me show you in more detail... Left Atrium Left Ventricle From the Left Ventricle, through the Aortic Valve, and into the Aorta. . . Aorta The Aorta is very large and muscular because it is the only artery that carries blood to the whole body. The Aorta has three arteries branching out of it that transport blood to the. . . Head Arms Arms Chest Abdominal Pelvis Legs Legs The descending part of the Aorta transports blood to the. . . When the deoxygenated blood is brought back to the heart, it enters through the inferior and superior vena cavas. Inferior Vena Cava Superior Vena Cava The blood coming from both vena cavas is brought into the Right Atrium. Through the Right Valve and into the Right Ventricle. . . Right Atrium Right Ventricle Pulmonary Artery Lastly, the blood travels through the Pulmonary Valve and through the Pulmonary Artery to the lungs. Pulmonary Valve The blood drops off the CO2 that is then breathed out. Aortic Valve This is what is happening inside of you every second of the day, with every pulse. Thank you! Capillaries The Circulatory System
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