What is the role of the anterior descending artery?

• A. Supplies blood to the anterior part of the heart.
• B. Supplies blood to the posterior part of the heart.
• C. Drains blood from the heart.
• D. Carries deoxygenated blood to the lungs.

Answer: (A)

The key idea is how coronary arteries nourish the heart muscle. The anterior descending artery runs along the front of the heart in the anterior interventricular groove and primarily supplies oxygenated blood to the anterior portion of the heart—especially the front wall of the left ventricle and much of the interventricular septum. This support is crucial for the heart’s ability to pump effectively.

It does not drain blood from the heart—that role belongs to the venous system via the coronary sinus. It also does not carry deoxygenated blood to the lungs—that function lies with the pulmonary circulation and, in general, arteries carry oxygenated blood away from the heart. Variations exist in coronary circulation, but the characteristic role of the anterior descending artery is to nourish the anterior heart region.