Circulate blood throughout the body is the function of the

• A. Circulatory system
• B. Nervous system
• C. Muscular system
• D. Digestive system

Answer: (C)

Circulation of blood is handled by the circulatory system, which includes the heart and a network of vessels that carry blood to every tissue and return it to the heart. The heart acts as a muscular pump, generating the pressure that moves blood through arteries, capillaries, and veins. The nervous system can regulate heart rate and vessel constriction, but it doesn’t move blood itself. The muscular system assists in movement and can aid venous return with muscle contractions, but it is not responsible for circulating blood. The digestive system processes and absorbs nutrients, not transporting blood.