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

Branches of coronary arteries

LCA branches -Lt An
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