Circulatory System
... There are eleven organ systems in the human body and each system has its own role of importance in it. ... The nervous system is telling the arms and legs of the body to move in order to steer and pedal the bike. The respiratory, digestive, and circulatory system work together to supply the body the energy it needs. ... Now it is obvious why each organ system is so significant to the correct functioning of the body. One very important system is the circulatory system. ... With a deeper insight, one would find that this everyday task of the circulatory system is not as simple as it sounds. It requires the use of many organs and parts to carry out that function as well as others, making the circulatory system a very important one in the body. The three main parts in the circulatory system are the heart, blood vessels, and blood. ... The blood vessels form a system of connecting tubes throughout the body. ... The last major part of the circulatory system is the blood. ... The heart, blood vessels, and blood are the major parts of the circulatory system and together they perform many important functions vital to the human body. The circulatory system has many important roles. ... The circulatory system plays a central part in respiration and without the circulatory system respiration would not be possible.