Jim needed coronary artery bypass surgery and his vascular surgeon said he was going to utilize pieces of his greater saphenous vein for the procedure. Jim's wife was concerned about his blood flow in his legs after the surgery. Is there a reason for her concern? Yes, because the great saphenous vein is the into the external iliac vein. No, because the great saphenous vein is a deep vein and does not drain a significant amount of blood for there to be any concern No, because although there may be a slight decrease in drainage, venous blood can move through deep and superficial veins, and the venous blood flow will simply be directed to other veins. Yes, because venous blood needs assistance from skeletal muscles in order to drain, so the surgery will damage the muscles and cause a decrease in venous drainage.