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Vena cava: The superior vena cava is the large vein which returns blood to the heart from the head, neck and both upper limbs.The inferior vena cava returns blood to the heart from the lower part of the body.The return of blood via the vena cava can be compromised and cause disease.For example, in the superior vena cava syndrome, the symptoms that result from compression of the large vein that carries blood down to the heart.The superior vena cava is located in the middle of the chest and is surrounded by rigid structures and lymph nodes.he return of blood via the vena cava can be compromised and cause disease. For example, in the superior vena cava syndrome, the symptoms that result from compression of the large vein that carries blood down to the heart.
They are the veins that return deoxygenated blood from the body into the heart. They both empty into the right atrium. The inferior vena cava (or caudal vena cava in animals) travels up alongside the abdominal aorta with blood from the lower part of the body. It is the largest vein in the body. The superior vena cava (or cranial vena cava in animals) is above the heart, and forms from a convergence of the left and right brachiocephalic veins that contain blood from the head and the arms. Read more: http://www.righthealth.com/topic/vena_ca...