Answer to Salsa King Loses a Step
Correct answer is A. Coronary artery ostia are protected by the right and left valves of the aorta. The aortic valve are labeled as right, left and posterior. The pulmonic valves are labeled as right, left and anterior. Inserting a stent into a coronary artery requires knowledge of this information.
.
Answer to this question is based on material presented in lectures 4 of the Thorax Dissection Review Series.