The great cardiac vein and middle cardiac vein empty into a venous cavity called the

A) pulmonary vein.
B) inferior vena cava.
C) superior vena cava.
D) coronary sinus.
E) coronary artery.

Venous Cavity

A space within the body where deoxygenated blood is collected from the venous system before being returned to the heart.

Coronary Sinus

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

Cardiac Vein

Blood vessels that drain deoxygenated blood from the myocardium (heart muscle) into the right atrium of the heart, playing a crucial role in the circulatory system.