The blood vessel carrying blood from the lungs to the heart is_______?
Correct answer: C. Pulmonary vein
- A. Hepatic artery
- B. Pulmonary artery
- C. Pulmonary vein
- D. Renal artery
Explanation
The pulmonary veins carry oxygenated blood from the lungs to the left atrium of the heart. Students may choose the pulmonary artery because it is also connected to the lungs, but it carries deoxygenated blood from the right ventricle to the lungs, not blood toward the heart.
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About Blood Vessels
Blood vessels include arteries, arterioles, capillaries, venules and veins, whose wall thickness, elasticity, lumen size and valves suit their roles in circulation. Questions compare pressure and blood flow in each vessel and distinguish pulmonary vessels, which carry blood to and from the lungs, from systemic vessels.
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