Exits the Right Ventricle with deoxygenated blood, to go to the lungs. Only artery to carry deoxygenated blood.

• A. Aorta
• B. Pulmonary Artery
• C. Pulmonary Vein
• D. Vena Cava

Answer: (B)

This tests understanding of how blood moves through the heart in the pulmonary circuit and the oxygenation state of blood in different vessels. The right ventricle sends deoxygenated blood to the lungs to be re oxygenated, and it does so via the pulmonary artery. This vessel is unique because it carries deoxygenated blood away from the heart to the lungs, whereas most arteries carry oxygenated blood. In contrast, the aorta distributes oxygen-rich blood to the body, the pulmonary veins return oxygenated blood from the lungs to the left atrium, and the vena cava brings deoxygenated blood from the body back to the right atrium. So the vessel exiting the right ventricle toward the lungs is the pulmonary artery.