Q.

Which of the following statements wrongly represents the nature of smooth muscle               [2021]

1 These muscles are present in the wall of blood vessels.  
2 These muscles have no striations.  
3 They are involuntary muscles.  
4 Communication among the cells is performed by intercalated discs.  

Ans.

(4)

Intercalated discs are present in cardiac muscle that communicate at some fusion points and allow the cells to contract as a unit.