Coronary arteries supply the cardiac muscle while the pulmonary artery carries deoxygenated blood from right ventricle of the heart to the lungs.
The heart function is to pump blood to all over the body to supply all organs. The muscles of the heart too need a blood supply for its function & nourishment. This blood supply is known as ‘ coronaries ‘. They are located surrounding the heart with arterial & venous circulation.
Pulmonary artery carries deoxygenated blood from the right ventricle to the lungs for oxygenation.