Your Coronary Arteries

The heart has 3 major coronary arteries. Two of these arteries arise from a common stem, called the left main coronary artery. Below is a picture of a normal human heart. Coronary arteries lay initially on the surface of the heart before they dive deep and eventually reach the muscle cells:


  • The left main coronary artery supplies the left side of the heart.
  • Its left anterior descending (LAD) branch supplies the front part of the heart.
  • The left circumflex (LCX) branch supplies the left lateral and back side of the heart.
  • Finally, the right coronary artery (RCA) is separate and supplies the right and the bottom parts of the heart.

Look at this animation of the coronary arteries:

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