Which of the following is not true of the coronary sinus?

A) It empties blood into the left atrium of the heart.
B) It drains the oxygen-poor blood from the cardiac veins, and returns it to the heart.
C) It runs through the fat pad of the coronary sulcus.
D) It is located on the posterior surface of the heart.
E) All of these are true of the coronary sinus.

Coronary Sinus

A large vein on the posterior side of the heart that collects blood from the heart muscle (myocardium) and returns it to the right atrium.

Coronary Sulcus

A groove on the surface of the heart that marks the division between the atria and the ventricles.

Oxygen-poor Blood

Blood that has circulated through the body and has a lower oxygen content, returning to the heart for reoxygenation.