The three main arteries in the coronary circulation are the left main coronary artery, the left anterior descending artery, and the right coronary artery.
The left main coronary artery begins at the base of the aorta and branches into two arteries, the left anterior descending artery and the left circumflex artery. The left anterior descending artery supplies blood to the front of the heart, running down the front of the left ventricle. The left circumflex artery supplies blood to the side of the left ventricle.
The right coronary artery also begins at the base of the aorta and runs down the right side of the heart, supplying blood to the right ventricle and the back of the left ventricle.
These three arteries form the coronary circulation. The coronary arteries provide oxygen-rich blood to the heart muscle, allowing the heart to pump more efficiently and effectively. When these arteries are blocked or narrowed, it can lead to heart attack, angina, and other cardiovascular diseases.