What are the major parts of the circulatory system and its functions?

I think most people believe tha the complete circulatory system consist of three separate systems to provide nourishment and oxygen to all cells in the body. read more

The circulatory system consists of four major components: The Heart: About the size of two adult hands held together, the heart rests near the center of the chest. Thanks to consistent pumping, the heart keeps the circulatory system working at all times. Arteries: Arteries carry oxygen-rich blood away from the heart and where it needs to go. read more

Another function of the circulatory system is completed by systemic circulation, which takes blood rich in oxygen from the heart throughout the body, and takes blood low in oxygen back to the heart. This process involves the ventricles, arteries and capillaries. read more