Question

Which coronary artery supplies the SA and AV node in most of the population?

a. Left main coronary artery
b. Left anterior descending (LAD) artery
c. Right coronary artery (RCA)
d. Circumflex artery

Answer 1

The right coronary artery (RCA) supplies the SA and AV nodes in most of the population.

Step-by-step explanation:

In most of the population, the right coronary artery (RCA) supplies the SA (sinoatrial) and AV (atrioventricular) nodes. The RCA is one of the two main coronary arteries that supply blood to the heart muscles. It originates from the right posterior aortic sinus, which is one of the dilations in the wall of the aorta.