what is the job of the coronary arteries?

1. to supply the heart with oxygen in the blood
2. to supply the heart with carbon dioxide in the blood
3. to keep the heart warm to pump blood
4. to supply the heart with blood

1. to supply the heart with oxygen in the blood

The primary function of the coronary arteries is to provide oxygenated blood to the heart muscle. These arteries branch off the aorta and surround the heart, delivering blood rich in oxygen and nutrients to ensure proper functioning of the heart.