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Blood travels through the heart twice before returning to the bodyThe double circulatory system
External view of the heartsuperior vena cava pulmonary artery aorta pulmonary vein pulmonary vein coronary artery right atrium left ventricle inferior vena cava right ventricle
The vena cava carries deoxygenated blood from the body to the right atriumsuperior vena cava (transports blood from the head) inferior vena cava (transports blood from rest of body)
The right atrium collects deoxygenated blood and pumps it to the right ventricle
The right ventricle pumps deoxygenated blood to the lungs
The pulmonary artery carries deoxygenated blood from the right ventricle to the lungs
The septum separates the left and right sides of the heart
The pulmonary veins carry oxygenated blood from the lungs to the left atrium
The left atrium collects the oxygenated blood and pumps it to the left ventricle
The left ventricle pumps oxygenated blood to the body via the aorta
The aorta carries the oxygenated from the left ventricle to the rest of the bodyAortic arch Aorta
Atrio-ventricular valves prevent backflow of blood into the atria when ventricles contractTricuspid valves Bicuspid valve (mitral valve) Tendon
The semi-lunar valves prevent backflow of blood from the arteries into the ventriclesPulmonary semi-lunar valve Aortic semi-lunar valve
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