This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General, Subject name: Physiology
Intercalated disks are found in: 
Select and explain. 
A. Smooth muscle, B. Cardiac muscles, C. Both, D. None
B: Cardiac muscles
Answer: B: Cardiac muscles 
Explanation: Ans. B. Cardiac musclesINTERCALATED DISKS provide a strong union between cardiac muscle fibers and maintain cell to cell cohesion so that pull of one contractile unit is transmitted along its axis to the next.