The three major parts of the circulatory system are the heart, blood and blood vessels, according to Hillendale Health. The circulatory facilitates the movement and delivery of oxygen, water and nutrients to the body's c... More »

The three main parts of the circulatory system are the heart, the blood and the blood vessels. The purpose of the circulatory system is to transport oxygen throughout the body. More »

The main organ in the circulatory system is the heart, according to Hillendale Health. The two other major parts of the circulatory system are the blood and the blood vessels. More »

The main organ in the circulatory system is the heart, according to Hillendale Health. The two other major parts of the circulatory system are the blood and the blood vessels. More »

The basic circulatory system of vertebrate animals, which are those with a backbone, consists of a heart, the blood and the arteries and system of blood vessels. The heart pumps the blood first to the arteries and then t... More »

The heart draws oxygenated blood from the lungs and distributes it to the rest of the body using a system of arteries and veins. Small coronary arteries and the pulmonary veins provide oxygenated blood into the heart. Th... More »

The respiratory system helps maintain homeostasis by regulating the intake of air into the body and by removing carbon dioxide from the blood, which in turn assists the circulatory system's function and many other operat... More »