What is the function of the great cardiac vein?

What is the function of the great cardiac vein?

• A. It drains blood from the anterior heart surface.
• B. It drains blood from the posterior heart surface.
• C. It carries oxygenated blood to the heart muscle.
• D. It drains blood from the brain.

Answer: (A)

The great cardiac vein is responsible for draining the anterior surface of the heart. It runs in the anterior interventricular sulcus with the left anterior descending artery and collects venous blood from the areas supplied by the left coronary artery, mainly the anterior portion of the left ventricle and parts of the right ventricle and interventricular septum. This blood then flows into the coronary sinus, which empties into the right atrium. Remember, veins carry deoxygenated blood back to the heart, not oxygenated blood, and they do not drain the brain.

The great cardiac vein is responsible for draining the anterior surface of the heart. It runs in the anterior interventricular sulcus with the left anterior descending artery and collects venous blood from the areas supplied by the left coronary artery, mainly the anterior portion of the left ventricle and parts of the right ventricle and interventricular septum. This blood then flows into the coronary sinus, which empties into the right atrium. Remember, veins carry deoxygenated blood back to the heart, not oxygenated blood, and they do not drain the brain.