Left coronary artery
Encyclopedia
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
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(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.
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.
Aortic valve
The aortic valve is one of the valves of the heart. It is normally tricuspid , although in 1% of the population it is found to be congenitally bicuspid . It lies between the left ventricle and the aorta....
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Branching
It typically runs for 1 to 25 mm and then bifurcates into the anterior interventricular arteryAnterior interventricular branch of left coronary artery
The "LAD", or left anterior descending artery is an artery of the heart.-Course:...
(also called left anterior descending (LAD)) artery and the left circumflex artery
Left circumflex artery
The "LCX", or left circumflex artery is an artery of the heart.-Course:...
(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.
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.