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Q: Which of the following are involved directly in pulmonary circulation?

  • 1
    left ventricle, aorta, and inferior vena cava
  • 2
    right atrium, aorta, and left ventricle
  • 3
    superior vena cava, right atrium, and left ventricle
  • 4
    right ventricle, pulmonary artery, and left atrium
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Answer : 4. "right ventricle, pulmonary artery, and left atrium"
Explanation :

Answer: D) right ventricle, pulmonary artery, and left atrium Explanation: Right ventricle (which pumps blood to the lungs), pulmonary artery (which carries blood to the lungs), and left atrium (which receives blood from the lungs) are involved directly in pulmonary circulation.

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