BLOOD CARDIOVASCULAR SYSTEM LYMPHOID ORGANS
BLOOD
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 Question 
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 What carries the oxygenated blood from the lungs to the left atrium of the heart? 
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  vena cava 
 
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  aorta 
 
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  pulmonary vein 
 
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  pulmonary artery 
 
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 Explanation: 
Detailed explanation-1: -Pulmonary veins are blood vessels that carry oxygen-rich blood from your lungs to your heart.
Detailed explanation-2: -The pulmonary artery carries oxygen-poor blood from the right ventricle into the lungs, where oxygen enters the bloodstream. The pulmonary veins bring oxygen-rich blood to the left atrium.
Detailed explanation-3: -The lung veins sometimes referred to as the pulmonary veins, are blood vessels that transfer freshly oxygenated blood from the lungs to the left atria of the heart.
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