What does the Right Coronary Artery supply?

What does the Right Coronary Artery supply?

• A. The left atrium and left ventricle
• B. The heart wall, right heart border, and posterior surfaces of both ventricles
• C. Only the right atrium
• D. The lungs

Answer: (B)

Coronary arteries supply defined regions of the heart, and the right coronary artery mainly nourishes the right-sided chambers and the back of the heart. It travels in the right atrioventricular groove to feed the right atrium and right ventricle, and it often sends branches that supply the inferior/posterior parts of the ventricles and the posterior interventricular septum. In most people, this distribution includes the posterior surfaces of both ventricles, which matches the description of the heart wall along the right heart border and the posterior surfaces. The left atrium and left ventricle are primarily supplied by branches from the left coronary artery, not the right coronary artery, and the lungs are supplied by the pulmonary circulation, not the coronary arteries. Thus, the right coronary artery supplies the heart wall around the right heart border and the posterior surfaces of both ventricles.

Coronary arteries supply defined regions of the heart, and the right coronary artery mainly nourishes the right-sided chambers and the back of the heart. It travels in the right atrioventricular groove to feed the right atrium and right ventricle, and it often sends branches that supply the inferior/posterior parts of the ventricles and the posterior interventricular septum. In most people, this distribution includes the posterior surfaces of both ventricles, which matches the description of the heart wall along the right heart border and the posterior surfaces. The left atrium and left ventricle are primarily supplied by branches from the left coronary artery, not the right coronary artery, and the lungs are supplied by the pulmonary circulation, not the coronary arteries. Thus, the right coronary artery supplies the heart wall around the right heart border and the posterior surfaces of both ventricles.