Why do the chambers of heart not supply with blood?

The chambers of the heart do not supply blood to themselves, but rather receive oxygenated blood from the lungs and pump it to the rest of the body. The heart muscle tissue receives its blood supply from the coronary arteries, which branch off from the aorta, the main artery carrying oxygenated blood from the heart to the rest of the body. The coronary arteries supply oxygen and nutrients to the heart muscle, ensuring that it can contract and pump blood effectively.