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.
Oxygenated blood enters the left side of the heart into the left atrium, passes down into the left ventricle, and then is pumped through systemic arteries to the systemic (body) capillaries, where it gives oxygen tot he tissue cells and picks up CO2. De-oxygenated blood then returns via veins to the right side of the heart.