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Left coronary artery

 
WordNet: left coronary artery
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The noun has one meaning:

Meaning #1: arises from the left aortic sinus; supplies the left side of the heart

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Wikipedia: Left coronary artery
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Artery: Left coronary artery
Gray495.png
Base of ventricles exposed by removal of the atria. (Left coronary artery visible at left.)
Gray505.png
The arch of the aorta, and its branches.
Latin arteria coronaria sinistra
Gray's subject #142 547
Source ascending aorta   
Branches anterior interventricular
circumflex
(ramus intermedius)

The left coronary artery, abbreviated LCA and also known as the left main coronary artery (often abbreviated LMCA), arises from the aorta above the left cusp of the aortic valve.

Contents

Branching

It typically runs for 1 to 25 mm and then bifurcates into the anterior interventricular artery (also called left anterior descending (LAD)) artery and the left circumflex artery (LCX). Sometimes an additional artery arises at the bifurcation of the left main artery, forming a trifurcation; this extra artery is called the intermediate artery.[1]

The part that is between the aorta and the bifurcation only is known as the left main artery (LM), while the term 'LCA' might refer to just the left main, or to the left main and all its eventual branches.

A "first septal branch" is sometimes described.[2]

Additional images

A coronary angiogram that shows the LMCA, LAD and LCX.

Diagram of a myocardial infarction.

Plan of the branches.

Autopsy specimen showing the coronary ostia and proximal segments of the coronary arteries. Compare with Gray's Anatomy drawing above.

Cardiac vessels

Human heart with coronary arteries

Heart left lateral coronaries diagram

See also

References

  1. ^ Fuster, V; Alexander RW, O'Rourke RA (2001). Hurst's The Heart (10th ed.). McGraw-Hill. p. 53. ISBN 0-07-135694-0. 
  2. ^ Verna E, Santarone M, Boscarini M, Ghezzi I, Repetto S (June 1988). "Unusual origin and course of the first septal branch of the left coronary artery: angiographic recognition". Cardiovasc Intervent Radiol 11 (3): 146–9. PMID 3139296. http://www.springerlink.com/content/d697r34x36r22051/. 

External links

v • d • e
List of arteries of torso · chest (TA A12.2, GA 6.598)
Pulmonary/
coronary
Ascending aorta/
aortic arch
Descending/
thoracic aorta

This entry is from Wikipedia, the leading user-contributed encyclopedia. It may not have been reviewed by professional editors (see full disclaimer)

 
 

 

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WordNet. WordNet 1.7.1 Copyright © 2001 by Princeton University. All rights reserved.  Read more
Wikipedia. This article is licensed under the Creative Commons Attribution/Share-Alike License. It uses material from the Wikipedia article "Left coronary artery".  Read more