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 heart has two sides. The right side pumps blood to the lungs to receive oxygen and get rid of carbon dioxide. The left side pumps oxygen-rich blood to the body. Blood flows out of the heart through arteries, which branch out and get smaller and smaller as they go into the tissues.