Circulatory System

The mammalian circulatory system is responsible for making sure that all the required nutrients, oxygen, biological chemicals and cells are circulated throughout the entire body in order to keep it fit and healthy. It is made up primarily of the heart and blood vessels and blood. Blood vessels such as the veins, arteries and capillaries make sure that the blood is able to reach every single part of the body in order to deliver its nutrients and oxygen while taking away any waste products (usually delivered ultimately to the kidneys so that the waste can be processed and released from the body via the urine). It is the circulatory system that allows the allergic response to take place by ferrying around the antibodies and inflammatory chemicals key to the response.