Which vessel carries blood from the heart to the lungs?

• A. Pulmonary arteries
• B. Aorta
• C. Pulmonary veins
• D. Superior vena cava

Answer: (A)

Blood to the lungs travels through the pulmonary circulation. The right ventricle pumps blood into the pulmonary artery, which carries it away from the heart to the lungs for oxygenation. This is the vessel that delivers deoxygenated blood to the lungs, making it the correct answer. After gas exchange, the blood returns to the heart through the pulmonary veins to the left atrium, then moves on to the left ventricle and out to the body via the aorta.

The other vessels have different roles: the aorta sends blood from the left ventricle to the systemic circulation; the pulmonary veins bring oxygenated blood back from the lungs to the heart; the superior vena cava drains deoxygenated blood from the upper body into the right atrium.