Repeated USMLE Questions Step 1- 203

A 74 year-old man presents to the clinic with a complaint of palpitation and lightheadedness. Image studies revealed blockage of the artery to the SA node.

This artery arises from which of these arteries?

A-Left coronary artery

B-Right coronary artery

C-Circumflex artery

D-Anterior interventricular artery

E-Posterior interventricular artery

Answer







The artery to the SA node is a branch of the right coronary artery.

The correct answer is B