Normal Heart Anatomy


  • Heart muscle is supplied by the coronary arteries, not by the blood flowing through the heart.
  • The major coronary vessels are the right coronary artery (RCA) and left main coronary artery (LCA), both of which come directly off of the aorta via the coronary ostia.
  • The LCA divides into the left anterior descending artery(LAD) and circumflex artery.
  • The RCA has no major branches, and terminates as the posterior descending artery (PDA).
  • There are may be variations in the anatomy.
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