What term describes the network of blood vessels that circulates blood through systemic and pulmonary circuits, a system known as double circulation?

• A. Circulation
• B. Systemic Circulation
• C. Pulmonary Circulation
• D. Cardiac Cycle

Answer: (A)

Circulation describes the entire network of blood vessels that carries blood through both loops of double circulation—the lungs (pulmonary) and the rest of the body (systemic). The term encompasses arteries, veins, and capillaries that transport blood throughout the body. The other terms refer to one specific loop or to the heart’s timing: systemic circulation is the body-wide loop, pulmonary circulation is the lung loop, and the cardiac cycle is the sequence of heart contractions. So the overall network term that fits the description is Circulation.