The right and left coronary arteries enter the top of the heart from the aorta.
Heart
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No. The coronary arteries are not the largest arteries. The aorta is the largest artery.
The coronary sinus runs in the posterior coronary sulcus. In the anterior coronary sulci the stems of the coronary artery run. The circumflex branch of the left and the extension of the right coronary artery that becomes the posterior descending artery run around the coronary sulcus from front to back
The coronary ostia are located at the base of the aorta, specifically within the aortic sinus, which is situated just above the aortic valve. They are the openings through which the right and left coronary arteries emerge from the aorta, supplying blood to the heart muscle. There are typically two main ostia: one for the right coronary artery and one for the left coronary artery.
Left coronary artery
The coronary artery carries oxygenated blood to the heart.
CABG (Coronary Artery Bypass Graft)
The right coronary artery doesnot have a primary bifurcation.
left coronary artery
Coronary artery chronic total occlusion or CTO is a partial or total blockage of a coronary artery for a month or beyond. Coronary CTO is often caused by an accumulation of atherosclerotic plaque within the artery.