Which artery carries oxygen-rich blood from the heart to the rest of the body?

• A. Pulmonary artery
• B. Jugular vein
• C. Superior vena cava
• D. Aorta

Answer: (D)

Think about how blood travels through the body after it’s oxygenated. Oxygen-rich blood leaves the heart through the left ventricle into the aorta, which is the body's main artery. From there, the aorta and its branches distribute oxygen to all tissues in systemic circulation. The pulmonary artery, by contrast, sends blood to the lungs and carries it away from the heart with reduced oxygen. Veins like the jugular vein and the superior vena cava bring blood back to the heart and are part of the return flow, not delivery to the body. So the vessel that carries oxygen-rich blood from the heart to the rest of the body is the aorta.