Which of the Following is NOT a Major Branch of the Coronary

Question

Which of the following is NOT a major branch of the coronary arteries?
A) coronary sinus
B) marginal artery
C) circumflex artery
D) anterior interventricular artery

Accepted Answer

The coronary sinus is not a major branch of the coronary arteries, but rather a large vein that collects deoxygenated blood from the heart muscle and returns it to the right atrium. The other options (B, C, D) are all major branches of the coronary arteries.