The cardiovascular system consists of the heart, blood vessels and approximately the 5 litres of the blood that the blood vessels transport. The cardiovascular system is powered by the body’s hardest working organ. The cardiovascular system is responsible for transporting nutrients and removing gaseous waste from your body. The main structures of this system is the heart the blood vessels and blood.
Delivery of oxygen and nutrients
The pulmonary circuit carries blood to the lungs to be oxygenated and then back into e heart in the lungs carbon dioxide is removed from the blood, and oxygen taken up by the haemoglobin in the red blood cells. The systemic circuit carries blood around the body to deliver the oxygen and