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Multiple Choice

What vessel carries blood from the lungs to the left atrium?

In pulmonary circulation, blood gets oxygenated in the lungs and then returns to the heart through the pulmonary veins into the left atrium. This makes the pulmonary vein the vessel that carries blood from the lungs to the left atrium. There are typically four pulmonary veins (two from each lung) entering the left atrium. The other vessels have different roles: the pulmonary artery carries deoxygenated blood from the right ventricle to the lungs; the aorta distributes oxygenated blood from the left ventricle to the body; and the superior vena cava returns deoxygenated blood from the upper body to the right atrium.

In pulmonary circulation, blood gets oxygenated in the lungs and then returns to the heart through the pulmonary veins into the left atrium. This makes the pulmonary vein the vessel that carries blood from the lungs to the left atrium. There are typically four pulmonary veins (two from each lung) entering the left atrium.

The other vessels have different roles: the pulmonary artery carries deoxygenated blood from the right ventricle to the lungs; the aorta distributes oxygenated blood from the left ventricle to the body; and the superior vena cava returns deoxygenated blood from the upper body to the right atrium.