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Q. Which vein brings clean blood from the lungs into the heart?
Answer: Pulmonary Vein
Notes: The pulmonary veins are a set of veins that deliver clean oxygenated blood from the lungs to the heart. It brings oxygen-rich blood to the left atrium. Systemic veins deliver deoxygenated blood to the heart.

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📌 Question Number: 131 in 31. Human Body - Blood, Circulation and Immune System in the above course in App.