<P> The superior vena cava ( SVC ) is the superior of the two venae cavae , the great venous trunks that return deoxygenated blood from the systemic circulation to the right atrium of the heart . It is a large - diameter ( 24 mm ) , yet short , vein that receives venous return from the upper half of the body , above the diaphragm . ( Venous return from the lower half , below the diaphragm , flows through the inferior vena cava . ) The SVC is located in the anterior right superior mediastinum . It is the typical site of central venous access ( CVA ) via a central venous catheter or a peripherally inserted central catheter . Mentions of `` the cava '' without further specification usually refer to the SVC . </P>
<P> The superior vena cava ( SVC ) is the superior of the two venae cavae , the great venous trunks that return deoxygenated blood from the systemic circulation to the right atrium of the heart . It is a large - diameter ( 24 mm ) , yet short , vein that receives venous return from the upper half of the body , above the diaphragm . ( Venous return from the lower half , below the diaphragm , flows through the inferior vena cava . ) The SVC is located in the anterior right superior mediastinum . It is the typical site of central venous access ( CVA ) via a central venous catheter or a peripherally inserted central catheter . Mentions of `` the cava '' without further specification usually refer to the SVC . </P>
where does the cranial vena cava supply blood to
where does the cranial vena cava supply blood to
the right atrium of the heart
the right atrium of the heart