From your lungs through the pulmonary veins into your heart's left atrium. Light red arrow shows oxygen-rich blood coming from your lungs through the pulmonary veins into your heart's left atrium.
1 Oxygen-rich blood then flows through the mitral valve (MV) into the left ventricle (LV), or the left lower chamber. 2  The left ventricle (LV) pumps the oxygen-rich blood through the aortic valve (AoV) into the aorta (Ao), the main artery that takes oxygen-rich blood out to the rest of the body.  The aortic valve closes quickly to prevent blood from flowing back into the left ventricle, which is already filling up with new blood. Blood leaves the heart through the aortic valve, into the aorta and to the body. This pattern is repeated, causing blood to flow continuously to the heart, lungs and body. Each of your heart's ventricles has an outlet valve. The right ventricle uses the pulmonary valve to help move blood into the pulmonary arteries. The left ventricle uses the aortic valve to do the same for the aorta. The DUB is the sound of the aortic and pulmonary valves closing. From there, the blood goes to the lungs, where it's oxygenated. On the left side, oxygen-rich blood from the lungs goes into the left atrium. When it is full, the atrium contracts, a valve opens, and the blood is sent into the left ventricle. Another valve allows the blood to flow into the aorta, the largest artery in the body. From there, the blood goes to all parts of your body. This process is repeated over and over.  When the right atrium contracts, blood flows through a valve into the heart's right ventricle. When the right ventricle contracts, blood is pumped through a valve into the pulmonary artery and into the lungs where it picks up oxygen. It works this way for an important reason. Blood returns to the heart from the lungs via the pulmonary veins. The blood goes into the left atrium. When the left atrium contracts, blood travels through a valve into the left ventricle. The left ventricle is a very important chamber because it pumps blood through a valve and into the aorta. The aorta-the main artery of the body-receives all the blood that the heart pumps out and sends it to the rest of the body All rights reserved. The aorta is the largest artery in the body. The aorta begins at the top of the left ventricle, the heart's muscular pumping chamber. The heart pumps blood from the left ventricle into the aorta through the aortic valve. Three leaflets on the aortic valve open and close with each heartbeat to allow one-way flow of blood. The aorta is a tube about a foot long and just over an inch in diameter. The aorta is divided into four sections: The aorta (/eɪˈɔrtə/) is the main artery in the human body, originating from the left ventricle of the heart and extending down to the abdomen, where it splits into two smaller arteries (the common iliac arteries). The aorta distributes oxygenated blood to all parts of the body through the systemic circulation.  Left Side. Blood leaves the heart through the aortic valve, into the aorta and to the body. This pattern is repeated, causing blood to flow continuously to the heart, lungs and body.  The blood enters the left atrium and is pumped into the left ventricle. From the left ventricle, the oxygen-rich blood is pumped to the rest of your body through the aorta. The aorta is the main artery that carries oxygen-rich blood to your body. Like all of your organs, your heart needs oxygen-rich blood. The light red arrow shows oxygen-rich blood coming from your lungs through the pulmonary veins into your heart's left atrium. From the left atrium, the blood is pumped into the left ventricle. The left ventricle pumps the bloo Oxygen-poor blood from cells of the body enters the heart through the right atrium and is pumped into the right ventricle. The blood then travels into the pulmonary artery, which goes into the lungs. In the lungs, the blood gives off carbon dioxide and picks up oxygen. The oxygen-rich blood returns to the heart by way of the pulmonary vein. The blood enters the left atrium and is pumped into the left ventricle. The blood is pumped out of the heart through the aorta to cells in the rest of the body. The muscular wall of the left ventricle is thicker than the wall of the right ventricle because it has to pump the blood to the entire body. Blood leaving the right ventricle only goes to go to the lungs
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where is blood coming from when it goes into the aorta