General Medicine General 5b95ecff All of the following statements regarding the hea are true Except A The nerve fibers that conduct the pain associated with ischemia accompany the sympathetic nerve supply to the hea B The sinoatrial node does not receive a nerve supply and thus initiates the hea beat autonomously C The atrioventricular node is located in the interatrial septum D The diaphragmatic surface of the hea is composed primarily of the left ventricular wall