THE MAJOR CORONARY ARTERIES

The left coronary artery supplies the front, top, and part of the back side of the left ventricle. The right coronary artery supplies most of the right ventricle and also a portion of the undersurface and back of the left ventricle in 80 to 90 percent of people.

The left main coronary artery divides into the anterior descending artery, which carries blood down the front of the heart to both ventricles, and the circumflex artery, which winds around the back of the heart to nourish that portion of the left ventricle and left atrium.

The right coronary artery curves around the front of the heart between the right atrium and right ventricle, sending one branch, the marginal artery, along the front to bring blood to the right ventricle. The second branch, the posterior descending artery, travels along the undersurface of the heart sending smaller arteries to both ventricles.

Each person has a unique coronary artery tree. The coronary arteries can have various numbers of branches and the placement of those braches varies greatly from person to person.

The left coronary artery, in all but rare circumstances, is the major sc of blood supply to the left ventricle main pumping chamber of the heart). The right coronary artery may vary in size from small to large, and its contribution to the overall blood supp the heart, while always important, is somewhat variable. Usually, the left coronary artery supplies about 65 percent of the heart's blood flow (45 cent by the left anterior descending artery and 20 percent by the circumflex artery), and the right coronary artery supplies 35 percent.

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Cardio & Blood-Сholesterol

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