Friday, October 5, 2012

Superior Vena Cava

Arising at the heart right atrium, the superior vena cava is a blood vessel which collects returning oxygen-depleted blood from the right and left brachiocephalic veins and internal jugular veins, draining it into the right atrium. This blood, which comes from the head, arms, and upper chest, then flows into the right ventricle through the tricuspid valve to be pumped into the lungs through the pulmonary artery.