There are 5 different answers to this question :
1. The vena cavae (superior and inferior ) returns deoxygenated blood from all over the body to the right atrial cavity of the heart.
2.The pulmanary veins return oxygenated blood from the lungs to the Left atrial cavity of the heart.
3.The coronary arteries carries blood from the aorta
to the muscles of the heart.
4.The coronary sinus
returns the blood from the heart muscles to the Right atrial cavity of the heart.
5. The Thebesian veins emptY the blood from the lungs and mediastinum to different chambers of the heart.
THIS IS THE COMPLETE LIST.