coronary artery

The coronary artery - Either of the two main arteries that supply the heart tissues with oxygen-rich blood. These vessels, known as the left and right main coronary arteries, arise directly from the aorta (the main artery in the body).

The term “coronary artery” is also applied to any of the arteries that branch off from the main coronary arteries, such as the left circumflex artery and the left anterior descending artery. Blockage of a coronary artery as a result of atherosclerosis (an accumulation of fatty deposits in the artery) can lead to myocardial infarction. (See also coronary artery disease.)


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