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Pulmonary arteries and pulmonary veins are two different items. The pulmonary artery takes deoxygenated blood from the heart and into the lungs so that the blood can be oxygenated. The oxygenated blood then returns to the heart, via the pulmonary veins, in order to be pumped into the system circulation.

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12y ago
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13y ago

Well, they are blood vessels, but they are more specifically known as arteries. Arteries are a type of blood vessel that bring blood away from the heart and to body cells.

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Q: Why are the pulmonary arteries and umbilical arteries called arteries instead of blood vessels?
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