- Left coronary artery
Name = Left coronary artery
Latin = arteria coronaria sinistra
GraySubject = 142
GrayPage = 547
Caption = Base of ventricles exposed by removal of the atria. (Left coronary artery visible at left.)
Caption2 = The
arch of the aorta, and its branches.
BranchTo = anterior interventricular
DorlandsPre = a_61
DorlandsSuf = 12154070
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 cuspof the aortic valve.
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).
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.
If an artery arises from the left main between the LAD and LCX, it is known as the "ramus intermedius". The ramus intermedius occurs in 37%Fact|date=February 2007 of the general population, and is considered a normal variant.
* - "Anterior view of the heart."
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Look at other dictionaries:
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