This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Conducting System of Hea, Subject name: Physiology
[{'content': 'Last pa of the hea to be repolarised is: \nSelect and explain. \nA. Apical epicardium, B. Apical endocardium, C. Epicardium of the base of LV, D. Endocardium of the base of LV', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Depolarization occurs from apex to base & endocardium to epicardium; Repolarization occurs from base to apex & epicardium to endocardium Last to depolarize are: Base of LV (epicardium) Pulmonary conus. Upper most pa of interventricular septum. Last to repolarise: Apex endocardium', 'role': 'assistant'}]