Which of the following atrium receives oxygenated blood from the lungs through the pulmonary vein?

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Left atrium

None of them

Right atrium

Right ventricle

answer is A.

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Detailed Solution

The mammal heart has four chambers - two atriums and two ventricles.
All these chambers are associated with blood vessels that transport blood to and from the heart.
The left atrium receives four pulmonary veins, two from each lung, which delivers oxygenated blood to all parts of the blood.
Pulmonary veins transport oxygenated blood from the lungs to the left atrium.
Only the veins in the lungs carry oxygenated blood to the heart.

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