Left circumflex artery

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Template:Infobox Artery

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List of terms related to Left circumflex artery

Synonyms and keywords: CX, circumflex artery, LCX, left circumflex artery, circumflex branch of the left coronary artery

Overview

The circumflex artery follows the left part of the coronary sulcus, running first to the left and then to the right, reaching nearly as far as the posterior longitudinal sulcus.

CX

The CX can be divided into three main segments (C1, C2 and C3) according to the origin of the marginal arteries. The CX segments are the following:

Structures supplied

The LCX supplies the posterolateral left ventricle and the anterolateral papillary muscle.

It also supplies the sinoatrial nodal artery in 38% of people.

It supplies 15-25% of the left ventricle in right-dominant systems. If the coronary anatomy is left-dominant, the LCX supplies 40-50% of the left ventricle. (See Coronary circulation for description of dominance.)

External links

• Template:SUNYAnatomyFigs - "Anterior view of the heart."
• Template:SUNYAnatomyFigs - "Posterior view of the heart."
• Template:SUNYAnatomyLabs - "Heart: The Left Coronary Artery and its Branches"
• Template:GPnotebook
• Template:EMedicineDictionary
• Image at merck.com
• Overview and diagrams at cardiologysite.com