What are the right and left coronary arteries?
These arteries and their branches supply all parts of the heart muscle with blood. The right coronary artery supplies the right side of the heart with blood. It branches into the posterior descending artery, which supplies the bottom portion of the left ventricle and back of the septum with blood. The left main coronary artery branches into the circumflex artery and the left anterior descending artery.
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