Question

select the correct answer from each drop-down menu.
arteries usually carry oxygenated blood away from the heart. however, the pulmonary artery carries deoxygenated blood. if a defect occurs in this artery, then the possible effect will be on the supply of deoxygenated blood to the ➙ . similarly, a defect in pulmonary veins may lead to a block in the supply of oxygenated blood to the ➙ .

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Explanation:

The pulmonary artery carries deoxygenated blood from the heart to the lungs (for oxygenation). So a defect in the pulmonary artery would affect the supply of deoxygenated blood to the lungs. The pulmonary veins carry oxygenated blood from the lungs back to the heart (left atrium). So a defect in pulmonary veins would block the supply of oxygenated blood to the heart.

Answer:

First drop - down: lungs
Second drop - down: heart