The pulmonary veins drain into which chamber?

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Multiple Choice

The pulmonary veins drain into which chamber?

Explanation:
Pulmonary veins deliver oxygenated blood from the lungs back to the heart and empty it into the left atrium. This is the chamber that receives the freshly oxygenated blood before it moves to the left ventricle via the mitral valve and then out to the systemic circulation. The other chambers have different drainage or pumping roles: the right atrium collects deoxygenated blood from the body (via the venae cavae and coronary sinus), while the ventricles pump blood to the lungs or to the body.

Pulmonary veins deliver oxygenated blood from the lungs back to the heart and empty it into the left atrium. This is the chamber that receives the freshly oxygenated blood before it moves to the left ventricle via the mitral valve and then out to the systemic circulation. The other chambers have different drainage or pumping roles: the right atrium collects deoxygenated blood from the body (via the venae cavae and coronary sinus), while the ventricles pump blood to the lungs or to the body.

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