Coronary arteries are blood vessels that supply oxygen-rich blood to the heart muscle. They branch off from the aorta, the main artery that carries blood from the heart to the rest of the body. The two main coronary arteries are the left coronary artery and the right coronary artery, which further divide into smaller branches to ensure the entire heart receives adequate blood flow. These arteries play a crucial role in maintaining heart health. If they become narrowed or blocked due to conditions like atherosclerosis, it can lead to serious issues such as angina or a heart attack. Regular check-ups and a healthy lifestyle can help keep coronary arteries functioning properly.