Read more about causes of Metastatic cancer. More information about causes of Metastatic cancer: 1  Metastatic cancer as a complication caused by other conditions. 2  Metastatic cancer as a symptom.
When your heart's left ventricle (one of the four chambers of the heart) pumps blood into the aorta (the largest artery in the body), the first muscle to receive the oxygen-rich blood is your heart itself. It receives this blood through the coronary arteries on the surface of the heart.
The right side of the heart sends blood to the lungs to pick up oxygen before going to the left side of the heart. There it is returned to the body full of oxygen. Blood now goes back to the heart from the lungs by way of the pulmonary veins and flows into the left atrium (LA).