What is different about pulmonary arteries and pulmonary veins?

Answer:
The pulmonary artery and pulmonary vein originates in the heart. What is different about them is that the pulmonary artery carries deoxygenated blood (blood without oxygen) as supposed to other arteries, which carry oxygenated blood. And the pulmonary vein carries oxygenated blood unlike other veins, which carry deoxygenated blood.
First answer by Mad Apple. Last edit by Mad Apple. Contributor trust: 1 [recommend contributor recommended]. Question popularity: 2 [recommend question].