Like all other muscles, the heart needs oxygen and nutrients in order to function properly.

Coronary arteries branch from the main artery, the aorta. They supply the heart muscle with oxygen.

The condition of the coronary arteries is crucial for the functioning of the heart. Their congestion and calcification can lead to a lack of oxygen in the heart. Ultimately, these processes can lead to a heart attack.

Coronary artery diseases are caused by the narrowing or blockage of the coronary arteries. This restricts the supply of oxygen to the heart.