The coronary circulation
Heart is supplied by two coronary arteries
1. Right coronary artery (RCA)
2. Left coronary artery (LCA)
coronary arteries arise at the root of the aorta
LCA branches -Lt An
terior Descending (LAD)
terior Descending (LAD)
-Marginal Artery
-Circumflex Artery
RCA branches-Marginal Artery
-Posterior descending branch
Left coronary artery (LCA) –Divides into Anterior Descending (LAD) and Circumflex artery
Area of blood supply
LAD (Anterior Descending Artery ) supplies:
Anterior and apical parts of heart
Anterior 2/3rd of interventricular septum.
Circumflex branch supplies :
The lateral and posterior surface of heart
Right coronary artery(RCA) supplies:
Right ventricle
Part of interventricular septum (posterior 1/3rd)
Inferior part of left ventricle
AV Node
