Oxygen-rich blood flows from the lungs through the left upper chamber (atrium) of the heart into the left lower chamber (ventricle) of the heart. The left ventricle muscle contracts to pump blood out through the aorta—a large blood vessel carrying blood out of the heart—to the rest of the body.
Primary Medical ReviewerRakesh K. Pai, MD, FACC - Cardiology, Electrophysiology
Specialist Medical ReviewerStephen Fort, MD, MRCP, FRCPC - Interventional Cardiology
Current as ofMarch 12, 2014
WebMD Medical Reference from Healthwise