Superior Vena Cava
February 13th, 2010 by admin
The supuerior vena cava (vena cava superior) is a thick (about 2.5 cm) but short (5-6 cm) trunk located to the right and somewhat posteriorly of the ascending aorta. It is formed by the merger of the right and left innominate veins (vv. Brachiocephalicae dextra and sinistra) behind the junction of the first right rib with the sternum. From there it passes downward along the right edge of the sternum, posteriorly of the first and second intercostals spaces; at the level of the top edge of the third rib, concealed behind the right auricle of the heart Medical Coding Services will help in colletions.