Left atrium

left atrium: the chamber of the human heart that receives oxygen-rich blood via the pulmonary vein.
left ventricle: the chamber of the human heart in which oxygen-rich blood enters through the bicuspid valve that leads into the aorta.
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From the left atrium,
Blood flows through the mitral valve (also known as the bicuspid valve) into the left ventricle.
Contraction of the ventricle closes the mitral valve and opens the aortic valve at the entrance to the aorta.
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A septum divides the right atrium and ventricle from the left atrium and ventricle, preventing blood from passing between them.
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The oxygenated blood then flows through pulmonary veins to the left atrium. From the left atrium this newly oxygenated blood passes through the mitral valve to enter the left ventricle.
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In birds and mammals, a vein that carries oxygenated blood from the lungs to the left atrium of the heart, from which blood is pumped into the left ventricle and from there to the body tissues.
pulse ...
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pulmonary vein The vein that carries oxygenated blood from the lungs to the left atrium of the heart. Veins carrying oxygenated blood from the lungs to the heart. PICTURE ...
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pulmonary circuit The system of blood vessels from the right ventricle of the heart to the lungs, transporting deoxygenated blood and returning oxygenated blood from the lungs to the left atrium of the heart.
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