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: Anatomy
[{'content': 'The right coronary artery supplies all of the following parts of the conducting system in the heart except - \nSelect and explain. \nA. SA node, B. AV node, C. AV bundle, D. Right bundle branch', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Area supplied by right coronary artery\n-\xa0\xa0\xa0\xa0\xa0\xa0\xa0 SA node (in 65%)\n-\xa0\xa0\xa0\xa0\xa0\xa0\xa0 Conducting system (AV bundle, bundle of His, part of left bundle branch) except RBB and part of left branch of AV bundle.\n-\xa0\xa0\xa0\xa0\xa0\xa0\xa0 Posterior 1/3rd of interventricular septum\n-\xa0\xa0\xa0\xa0\xa0\xa0\xa0 Right ventricle except part adjoining anterior interventricular groove and small part of left ventricle adjoining posterior interventricular groove.\n\xa0Area supplied by left coronary artery\n-\xa0\xa0\xa0\xa0\xa0\xa0\xa0 Left atrium\n-\xa0\xa0\xa0\xa0\xa0\xa0\xa0 Left ventricle including apex\n-\xa0\xa0\xa0\xa0\xa0\xa0\xa0 Part of right ventricle adjoining anterior interventricular groove.\n-\xa0\xa0\xa0\xa0\xa0\xa0\xa0 Anterior 2/3rd of interventricular septum\n-\xa0\xa0\xa0\xa0\xa0\xa0\xa0 RBB, LBB\n-\xa0\xa0\xa0\xa0\xa0\xa0\xa0 SA node (in 35%)', 'role': 'assistant'}]