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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.
The superior vena cava is a large, yet short vein that carries deoxygenated blood from the upper half of the body to the heart's right atrium. The inferior vena cava (or IVC) â¦ is the large vein that carries de-oxygenated blood from the lower half of the body into the right atrium of the heart.ix large veins carry blood to the heart: the superior vena cava and inferior vena cava carry blood from the body to the right atrium, and four pulmonary veins carry blood fro â¦ m the lungs to the left atrium.