Coronary Vessels
The three major coronary arteries are the left anterior descending (LAD), left circumflex (LCX), and right coronary artery (RCA). Branches of the LAD are the diagonal and spetal perforators, while the LCX gives off obtuse marginals.
The LAD supplies most of the apex of the heart, the anterior wall of the left ventricle, and the anterior two-thirds of the septum.
The LCX perfuses the lateral wall of the left ventricle.
The RCA perfuses the entire right ventricular free wall and the posterobasal left ventricle.
Either the RCA or the LCX can perfuse the posterior third of the septum via the posterior descending branch, resulting in 'heart dominance'. 80% of people are right dominant.
Most hearts have numerous coronary anastemoses, or collateral circulations.
used with permission, Patrick Lynch
There is nearly one capillary next to each cardiac cell.
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