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 muscle that is found in the walls of the heart is characterized by _______: \nSelect and explain. \nA. A peripherally placed nucleus, B. Multiple nuclei, C. Intercalated discs, D. Fibers with spindle-shaped cells', 'role': 'user'}, {'content': 'Answer: C \nExplanation: KEY CONCEPT:\nIntercalated discs are only found in cardiac muscle. Multiple, peripherally positioned nuclei are found\xa0in the ﬁbers of skeletal muscle. Smooth muscle cells are spindle-shaped.', 'role': 'assistant'}]