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Class 10 Science Medium Mcq English Medium

Oxygen-rich blood from the lungs first enters which chamber of the human heart?

Question
Oxygen-rich blood from the lungs first enters which chamber of the human heart?
Right atrium
Left atrium
Right ventricle
Left ventricle
Answer
Left atrium
Detailed Explanation
Oxygen-rich blood from the lungs comes to the thin-walled upper left chamber of the heart, the left atrium.
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