HOW DO THE ARTERIES OF THE PULMONARY CIRCULATION DIFFER.
The pulmonary arteries carry oxygen-poor blood to the lungs, whereas the pulmonary veins carry oxygen-rich blood from the lungs to the left atrium of the heart. This blood is rich in nutrients. The pulmonary arteries are more like veins anatomically. They have relatively thin walls, reflecting the fact that the pulmonary circulation is a low pressure bed.
