Heart And Blood Vessels Diagram innerbody image cardovThe cardiovascular system consists of the heart blood vessels and the approximately 5 liters of blood that the blood vessels transport Responsible for transporting oxygen nutrients hormones and cellular waste products throughout the body the cardiovascular system is powered by the body s hardest working organ the heart which is only about the size of a closed fist Heart And Blood Vessels Diagram heart is a muscular organ in most animals which pumps blood through the blood vessels of the circulatory system Blood provides the body with oxygen and nutrients as well as assists in the removal of metabolic wastes In humans the heart is located between the lungs in the middle compartment of the chest In humans other mammals and birds the heart is divided into four chambers medicalook human anatomy organs Blood vessels htmlBLOOD VESSELS ANATOMY Blood vessels are responsible for the transportation of blood made up arte...