Answer
The myocardium receives it blood supply from the right and left coronary arteries. The left coronary artery has two main divisions -- the left anterior descending ( LAD) artery, and the circumflex branch.
Work Step by Step
The LAD supplies the anterior of the left side of the heart. The circumflex artery takes blood to the outer surface of the dorsal-facing aspect of the heart. Some of the structures supplied by the right coronary artery are the right chambers of the heart( atrium and ventricle) , the sino-atrial node(SA node), the atrio-ventricular node(SV node), and the interventricular septum
