Which term describes the network that circulates blood through the heart and vessels?

Which term describes the network that circulates blood through the heart and vessels?

• A. Veins
• B. Arteries
• C. Capillaries
• D. Cardiovascular system

Answer: (D)

The cardiovascular system describes the entire network that circulates blood through the heart and vessels. It includes the heart as the pump and the blood vessels—arteries, veins, and capillaries—as the pathways that carry blood to and from every part of the body. Arteries, veins, and capillaries are individual components within this system, but the umbrella term that covers the whole network is the cardiovascular system. This system supports both the pulmonary circuit (to the lungs) and the systemic circuit (to the rest of the body), enabling oxygen delivery and nutrient transport throughout the body.

The cardiovascular system describes the entire network that circulates blood through the heart and vessels. It includes the heart as the pump and the blood vessels—arteries, veins, and capillaries—as the pathways that carry blood to and from every part of the body. Arteries, veins, and capillaries are individual components within this system, but the umbrella term that covers the whole network is the cardiovascular system. This system supports both the pulmonary circuit (to the lungs) and the systemic circuit (to the rest of the body), enabling oxygen delivery and nutrient transport throughout the body.