What is the function of coronary arteries?

The function of coronary arteries is to supply oxygenated blood to the heart muscle itself. The heart, like any other organ, requires a constant supply of oxygen to function effectively, and the coronary arteries branch off from the aorta to deliver this vital oxygen-rich blood directly to the heart tissue. This is crucial, as the heart is continually pumping and needs a reliable source of oxygen to maintain its contractions and overall health.

Other options describe functions related to different types of blood vessels or organs. Supplying blood to the lungs is a function of the pulmonary arteries, while carrying deoxygenated blood back to the body is the role of veins, particularly the vena cava. Removing carbon dioxide from the heart occurs through the circulatory system but is not the specific role of coronary arteries. Thus, the option that identifies the supply of oxygenated blood to the heart accurately describes the essential work of the coronary arteries.