Blood flows to all the organs of the body except the lungs through the:

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

Answer: (B)

Systemic circulation delivers blood to all body organs through the aorta. After leaving the left ventricle, blood enters the aorta—the main artery—and travels through its branches to reach tissues throughout the body, delivering oxygen and nutrients and then returning to the heart via the venous system. The lungs are served by the pulmonary circulation, which uses the pulmonary artery to carry blood from the right ventricle to the lungs and the pulmonary veins to bring it back. So for sending blood to every organ except the lungs, the vessel at the center is the aorta.