THE CIRCULATORY SYSTEM The circulatory system consists of the heart, blood, veins, arteries, and capillaries. The heart is the main function for the circulatory system. Without the heart the body will not get the oxygen and other resources that blood provides. The blood travels to and from the heart through arteries, veins, capillaries. The structures of all of these are well suited for the functions they perform. The artery is the first elastic tube that …showed first 75 words of 506 total…

…showed last 75 words of 506 total…blood is past through many of these to get to the veins from the artery. The heart has many different blood pressures and the veins, capillaries, and arteries suit these blood pressures in many ways. The structure of the circulatory system is designed very well for its purpose of transporting blood around the body in one smooth circle. The structure of the veins, capillaries and arteries are suited well for their purpose of transporting blood.