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
The muscle that is found in the walls of the heart is characterized by _______: 
Select and explain. 
A. A peripherally placed nucleus, B. Multiple nuclei, C. Intercalated discs, D. Fibers with spindle-shaped cells
C: Intercalated discs
Answer: C: Intercalated discs 
Explanation: KEY CONCEPT:
Intercalated discs are only found in cardiac muscle. Multiple, peripherally positioned nuclei are found in the ﬁbers of skeletal muscle. Smooth muscle cells are spindle-shaped.