The large arterial trunk that carries blood from the heart to be distributed by branch arteries through the body.

• A. Pulmonary artery
• B. Aorta
• C. Vena cava
• D. Aneurysm

Answer: (B)

The main concept here is identifying the vessel that carries blood from the heart to the rest of the body. The aorta is the large arterial trunk that leaves the left ventricle and distributes oxygen-rich blood through its major branches to all tissues. In contrast, the pulmonary artery carries blood to the lungs for oxygenation, the vena cava are veins that return blood to the heart, and an aneurysm is a dilation of a blood vessel, not the vessel itself. So the vessel described is the aorta.