This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
[{'content': 'Most common site of myocardial infaction is ? \nSelect and explain. \nA. Anterior wall of left ventricle, B. Posterior wall of left ventrilce, C. Posterior wall of right ventrilce, D. Inferior wall of left ventricle', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Anterior wall of left ventricleAlso knowo By convention, the coronary aery that gives rise to posterior descending branch and there by perfuses the posterior third of septum is called dominant.In 80% of persons, right dominant circulation is present, i.e. posterior discending branch arises from right coronary aery.o In 20% of cases, it arises from left circumflex aery left dominant circulation.", 'role': 'assistant'}]