Left coronary artery
Arteria coronaria sinistra
- Acronym: LCA
Definition
The left coronary artery is more commonly called the left main coronary artery (LMCA) in its proximal part. The left main coronary artery (LMCA) arises from the left coronary sinus and quickly bifurcates into the anterior interventricular artery (left anterior descending (LAD) artery) and the circumflex (LCX) artery. The LAD follows the interventricular septum to the apex of the heart in the anterior interventricular sulcus, while the LCX travels in the coronary sulcus (atrioventricular groove) between the left atrium and ventricle, eventually reaching the coronary sinus.
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