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Anatomy of the Coronary Arteries

As an organ in your body, the heart needs a blood supply. Coronary arteries are the first arteries to arise from the aorta. Those are the arteries which supply blood to the heart muscle. They are divided into 2 main branches, the left coronary artery and the right coronary artery. The left coronary artery divide to give 2 main branches, the Left anterior descending (LAD) artery and the circumflex artery (Cx). The right coronary ends as the posterior descending artery (PDA). When physicians talk about coronary arteries, they are usually referring to these three: the right coronary, the left anterior descending, and the left circumflex.

The LAD is one of the important branches as it supplies the interventricular septum and give the diagonal arteries which supply part of the wall of the left ventricle.

The circumflex artery is another important branch which supply another part of the left ventricle and ain some patients supplies the muscle controlling the function of the mitral valve.

The right coronary artery supplies most of the right ventricleand its terminal branch, PDA, supplies a part of the interventricular septum.

As you can see, the main trunks split into major branches, which split into smaller branches and on and on until the arterial branches become so small they cannot be seen by the naked eye

 

 

 

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