The Right Coronary Artery

• • Right coronary artery circles the heart to the right within the coronary sulcus. In addition to the atrial branches, the right coronary artery gives off two major branches: the right marginal branch and the right posterior interventricular branch.
• The right coronary artery (RCA) branches off the ascending aorta and turns to the right
• The branches of the right coronary artery typically supply blood to

  • right atrium
  • portion of left atrium
  • interatrial septum
  • entire right ventricle
  • variable portion of left ventricle
  • postero-inferior one third of the interventricular septum
  • portions of conducting system (sinoatrial node) of heart
• The right coronary artery gives off atrial branches as it curves across the anterior surface of the heart
• Near the right border of the heart, the right marginal branch is formed
• The right marginal branch supplies the right atrium, interatrial septum, and right ventricle with blood
• As the right coronary artery continues across the posterior surface of the heart it gives off the posterior interventricular branch