Anatomy All of the following are true about coronary aery, EXCEPT: A Right coronary aery lies in right anterior coronary sulcus B Left anterior descending aery is a branch of left coronary aery C Usually 3 obtuse marginal aeries arise from left coronary aery D In 85% cases posterior descending interventricular aery arises from right coronary aery 💡 Explanation All of the following are true about coronary aery, EXCEPT: ✓ Correct Answer: C. Usually 3 obtuse marginal aeries arise from left coronary aery