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139183 Unknown

All of the following statements regarding the heart are true EXCEPT

AThe nerve fibers that conduct the pain associated with ischemia accompany the sympathetic nerve supply to the heart
BThe sinoatrial node does not receive a nerve supply and thus initiates the heart beat autonomously (Correct Answer)
CThe atrioventricular node is located in the interatrial septum
DThe diaphragmatic surface of the heart is composed primarily of the left ventricular wall