What are the two main coronary arteries?

What are the two main coronary arteries?

• A. Left coronary artery (LCA) and right coronary artery (RCA).
• B. Anterior cerebral and posterior cerebral arteries.
• C. Subclavian and axillary arteries.
• D. Pulmonary and bronchial arteries.

Answer: (A)

The vessels that supply the heart muscle with oxygenated blood are the coronary arteries. There are two main ones: the left coronary artery and the right coronary artery. They originate from the aorta just above the aortic valve and then branch to perfuse the myocardium. The left coronary artery mainly feeds the left side of the heart, while the right coronary artery tends to supply the right side and often the bottom portion of the heart. The other pairs listed correspond to arteries serving the brain, upper limb, and lungs, not the heart, so they aren’t the coronary arteries.

The vessels that supply the heart muscle with oxygenated blood are the coronary arteries. There are two main ones: the left coronary artery and the right coronary artery. They originate from the aorta just above the aortic valve and then branch to perfuse the myocardium. The left coronary artery mainly feeds the left side of the heart, while the right coronary artery tends to supply the right side and often the bottom portion of the heart. The other pairs listed correspond to arteries serving the brain, upper limb, and lungs, not the heart, so they aren’t the coronary arteries.