Transcription: In order for the heart to pump blood through the body, it first has to provide blood to itself so that it can obtain oxygen and nutrients. The myocardium is supplied with blood by two main coronary arteries that arise at the root of the aorta. The left main coronary, which then divides into the left descending and the circumflex, and the right main coronary artery. The main coronary arteries run along the surface of the heart as large epicardial arteries. They also send smaller branch arteries into the myocardium, the intramyocardial arteries. These further divide into a dense network of arter ...
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