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 is fundamentally a blood pump. It pumps blood from the right side of the heart to the lungs to pick up oxygen. The oxygenated blood returns to the left side of the heart. The left side of the heart then pumps blood into the circulatory system of blood vessels that carry blood throughout the body. The heart consists of four chambers. The two upper chambers are called atria and the two lower chambers are called ventricles.