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Left Marginal Branch of Circumflex Artery of Heart
Cardiovascular System

Left Marginal Branch of Circumflex Artery of Heart

Ramus marginalis sinister arteriae circumflexae cordis

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The left marginal branch arises from the circumflex branch of the left coronary artery and it is often calledreferred to as the obtuse marginal artery.


The left marginal branch runs approximately perpendicular to the circumflex artery. It courses inferiorly on the left ventricle along the left cardiac border (Standring, 2016).


The left marginal branch gives rise to several small unnamed branches.

Supplied Structures

The left marginal 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


Standring, S. (2016) Gray's Anatomy: The Anatomical Basis of Clinical Practice. Gray's Anatomy Series 41st edn.: Elsevier Limited.

Learn more about this topic from other Elsevier products


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Arteries are vessels transporting blood between heart, tissues, and other organs in order to supply them with nutrition and oxygen.

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