Right coronary artery

Right Coronary Artery

• Right coronary artery: This is a major blood vessel of the two main vessels that branch off from the aorta. It originates from the right aortic sinus and it follows a course along the atrioventricular groove. It generally supplies the right side of the heart. (1,2,3)
  • Conal branch of right coronary artery: The conal branch, also known as the conus arteriosus artery, is a branch of the right coronary artery. It runs towards the conus arteriosus or the right ventricular outflow tract, supplying blood to that region (1,3).
  • Sinu-atrial nodal branch of right coronary artery: Typically, this branch supplies the sinoatrial node, the heart’s natural pacemaker, it It encircles the superior vena cava in a clockwise or counterclockwise direction before reaching the sinoatrial (SA) node. (1,2,3)
  • Atrial branches of right coronary artery: These branches of the right coronary artery are typically responsible for supplying the right atrium (2,3)
  • Anterior ventricular branches of right coronary artery: These are branches of the right coronary artery that typically supply the anterior part of the right ventricle. (1,3)
  • Right marginal branch of right coronary artery: This is a significant branch of the right coronary artery that follows the margin of the heart to supply the outer right ventricular wall. (1,3)

• Inferior interventricular artery: also known as the posterior descending artery, It usually runs along the inferior interventricular groove. Septal branches from the inferior interventricular artery supply the ventricular septum. (2,3)
  • Septal branches of inferior interventricular artery: These are arteries that originate from the inferior interventricular artery. They supply the interventricular septum. (1,2,3)
• Atrioventricular nodal branch of right coronary artery: The Atrioventricular nodal branch, in most cases, arises from the right coronary artery and supplies the AV node, a key component of the heart’s electrical conduction system. (2,3)

Bibliography

1. Howard SA, Bateman MG, Laske TG, Iaizzo PA. Anatomy of the Human Heart. Handbook of Cardiac Anatomy, Physiology, and Devices, Edition. Third. Minneapolis: Springer International Publishing; 2015. p. 61–89.
2. Anderson, R. H., Spicer, D. E., Hlavacek, A. M., Cook, A. C., & Backer, C. L. (2013). Anatomy of the cardiac chambers. In Wilcox’s Surgical Anatomy of the Heart (4th ed., pp. 13–50). Cambridge University Press. https://doi.org/10.1017/CBO9781139028561.003
3. Lüdinghausen M. The Clinical Anatomy of Coronary Arteries. Springer Berlin Heidelberg; 2003. 1–88 p.

The structure and organization of anatomical terms used in this text follow the guidelines provided by FIPAT (2019) in their publication: FIPAT. (2019). Terminologia Anatomica (2nd ed.). FIPAT.library.dal.ca. Federative International Programme for Anatomical Terminology. Retrieved May 7, 2023, from https://fipat.library.dal.ca/TA2/