Circulatory System of the Torso
A number of major cardiovascular organs and blood vessels are placed in the circulatory system of torso. The primary structure of the cardiovascular system of torso, especially the upper abdomen and chest, is the heart, which pumps blood throughout the body. The heart's primary structures and blood vessels, including the aorta and the superior and inferior vena cava are, also, important. The aorta distributes oxygenated blood to all parts of the body through the systemic circulation. The superior vena cava carries deoxygenated blood from the upper half of the body to the heart's right atrium. The inferior vena cava carries de-oxygenated blood from the lower half of the body into the right atrium of the heart. There are also a large number of important blood vessels which serve the major organs of the upper abdomen, including the splenic vein, the abdominal aorta, and the hepatic veins. These structures are critical to the process of moving deoxygenated blood to the lungs where carbon dioxide is removed from the blood and replaced with oxygen, and then circulating the oxygenated blood throughout the body's tissues and organs.