Corpus: Left coronary artery
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Synonym: left coronary artery
'''English (LCA), left main coronary artery (LMCA)
Definition[Bearbeiten]
The arteria coronaria sinistra, or ACS for short, is one of the two coronary arteries of the heart.
Anatomy[Bearbeiten]
Course[Bearbeiten]
The arteria coronaria sinistra arises from the left aortic sinus behind the insertion of the aortic valve (valvula semilunaris sinistra). In about 75 % of cases, it is more pronounced than the right coronary artery. It runs a short distance between the conus arteriosus and the left auricle and then splits into two main branches:
- Ramus circumflexus
- Ramus interventricularis anterior
Branches[Bearbeiten]
- Ramus circumflexus
- Ramus nodi sinuatrialis
- Ramus atrioventriculares
- Ramus marginalis sinister (ramus marginalis)
- Ramus atrialis sinister (intermedius)
- Ramus atrialis anastomoticus (globular artery)
- Ramus posterior ventriculi sinistri (ramus posterolateralis sinister)
- Ramus interventricularis anterior (RIVA, LAD)
- Ramus coni arteriosi
- Ramus lateralis (Ramus diagonalis, Ramus anterolateralis)
- Rami interventriculares septales (Rami septales anteriores)
Supply area[Bearbeiten]
The left coronary artery supplies the following structures of the heart in particular:
- left atrium
- left ventricle
- parts of the anterior wall of the right ventricle
- anterior two thirds of the ventricular septum
see main article: Coronary artery