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 the heart pumps the blood through and around the body. …