In order for the heart to work regularly and effectively, it must be fed with blood rich in oxygen and nutrients. Coronary circulation is the circulation of blood in the vessels that feed the heart. The muscle tissue of the heart (myocardium) is so thick that, even though the heart is full of blood, coronary vessels are needed for the blood to reach the depths of the muscle tissue. The vessels are called coronary arteries (coronary arteries), and the vessels that carry deoxygenated dirty blood away from the heart muscle are called cardiac veins. It is grain. The left coronary artery divides into the left anterior descending artery and the left circumflex artery. The left anterior descending artery supplies the front of the heart, and the circumflex artery supplies the left side and back of the heart. The right coronary artery divides into branches that feed the right heart, a part of the interventricular wall, and the back of the heart. Since the coronary circulation varies from person to person, its full evaluation is possible with cardiac catheterization or coronary angiography with computer tomography. So much so that 4% of people have a third coronary artery, called the posterior coronary artery. Rarely, a person may have a single coronary artery that wraps around the aortic root. When the coronary arteries are healthy, they provide coronary circulation to meet the needs of the heart muscle. However, these partially narrow vessels can often become blocked due to atherosclerosis. In this case, blood flow accelerates to meet the heart's oxygen needs, but if sufficient oxygen is not provided, tissue ischemia, a state of oxygen deficiency, occurs. Sudden ischemia causes severe chest pain called angina. In severe ischemia, the heart muscle dies from lack of oxygen, resulting in myocardial infarction (heart attack).
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