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Right Inferolateral Branch of Right Coronary Artery
Cardiovascular System

Right Inferolateral Branch of Right Coronary Artery

Ramus inferolateralis dexter arteriae coronariae dextrae

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The right inferolateral branch arises from the right coronary artery after it has reached the left ventricle on the diaphragmatic surface of the left ventricle. This branch is a common variation of the branching pattern of the right coronary artery on the diaphragmatic surface. Other variations do not have this branch and the final branch of the right coronary artery is the posterior interventricular artery (Tubbs et al., 2016).


The right inferolateral branch runs inferiorly towards the apex of the heart along the diaphragmatic surface of the left ventricle.


The right inferolateral branch gives off several small unnamed branches.

Supplied Structures

The right inferolateral branch contributes to the supply of the left ventricle.

List of Clinical Correlates

- Coronary artery disease

- Coronary atherosclerosis

- Coronary bypass graft

- Coronary angioplasty

- Coronary occlusion

- Coronary revascularization

- Coronary artery fistula


Tubbs, R. S., Shoja, M. M. and Loukas, M. (2016) Bergman's Comprehensive Encyclopedia of Human Anatomic Variation. Wiley.

Learn more about this topic from other Elsevier products

Right Coronary Artery

ScienceDirect image

The right coronary artery (RCA) is initially imaged in the LAO 30-degree view, which displays the proximal and distal RCA well, and the artery appears as the letter C. To evaluate the right posterior descending artery (rPDA) and posterior lateral branches (rPL), RAO 0-degree, cranial 30-degree view is utilized.

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