The circulatory system is an organ system That passes nutrients, gases, blood cells, And hormones. This system carries cells And helps fights diseases. It stabilizes And helps maintain homeostasis. On average, the body has about 5 liters of blood going Through the circulatory system. The Heart, the lungs, and the blood vessels work together to form the circle part of The circulatory System.This System is the main transportation and cooling system for the Human Body. The red Blood cells act like of little ups or fedex trucks carrying packages of all sort that are needed for the cells like the trucks give to the people.Every cell in the body needs oxygen to remain alive. The veins carry blood to the heart. The Arteries carry blood away from the heart. Blood in the veins is blood where most of the oxygen and nutrients are delivered to the cells. The blood in the arteries is loaded with oxygen and nutrients. I believe that the circulatory system is really important because it helps carry blood to the heart and lungs. It helps you breathe and live. I think the circulatory is awesome.