How does blood flow through the body?

Answer 1

blood (red blood cells) filled with wastes like carbon dioxide enters the inferior vena cava(lower body) or the superior vena cava (upper body) in the heart and goes to the right atrium and goes to the right right ventricle though the tricuspid valve. from there the blood goes to left and right lungs to drop off the carbon dioxide for the organism to exhale and picks up oxygen through the pulmonary valve and pulmonary artery and returns back to the heart through the pulmonary vein and into the left atrium. from there in goes to the left ventricle through the mitral valve. oxygen rich blood flows through the aortic valve to the aorta to go to the rest of the body. from there oxygen rich blood flows through arteries until it gets to a place like the big toe. capillaries connect arteries to veins. capillaries take the oxygen from the blood cells and puts carbon dioxide and other wastes in them. next, the blood goes to the veins back to the heart and goes through the inferior vena cava and the cycle start all over again until blood cells travel to the liver 120 days after they are made in large bones like the femur(thigh bone).

Answer 2

The heart pumps blood through the arteries throughout your body.

Veins take blood to your heart, arteries take blood away. Oxygen depleted blood enters the heart (right side) through vena cava (a vein). The heart contracts and pushes blood to the lungs through pulmonary arteries. After picking up oxygen in the lungs, pulmonary ateries carry oxygenated blood back to the other side of the heart (left side). The heart contracts again to push the oxygenated blood out to your body through arteries, arterioles and capillaries where you use the oxygen, and return the oxygen depleted blood into your heart(right side) again through veins.

Many people think that veins always carry deoxygenated blood and arteries carry oxygenated blood. This IS NOT the case. Veins carry blood to the heart (deoxygenated from the body & oxygenated from the lungs) and arteries carry blood away from the heart (deoxygenated to the lungs, oxygenated to the body)

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Blood enters the heart through the right atrium flowing from the superior and inferior vena cava. It then passes through the tricuspid valve (right atrio-ventricular valve) into the right ventricle. From there, it passes through the pulmonary valve into the pulmonary trunk. Here is where the pulmonary circuit is. The oxygen poor blood then releases the CO2 into the alveoli in the lungs and picks up O2 from the alveoli. It returns to the heart through the left atrium. It goes into the left ventricle by the bicuspid valve (AKA left atrio-ventricular valve).Then, the blood pumps through the aortic valve into the aorta. This leads to the body arteries. They disperse blood throughout the body and pick up wastes through capillaries. Lastly, the O2 poor blood and CO2 rich blood moves back to the heart by veins.