where does the superior vena cava drain
The superior vena cava is located in the upper thoracic region. It is the main vein that drains into the right atrium of the heart. Blood returning from the brain, upper thora â¦ cic region, and arms travels through this vein to the heart.+ 6 others found this useful.he superior vena cava is located in the upper thoracic region. It is the main vein that drains into the right atrium of the heart. Blood returning from the brain, upper thora â¦ cic region, and arms travels through this vein to the heart. + 6 others found this useful.