The correct answer would be C.The Smooth and cardiac muscles operate involuntarily
Answer: Option C
Explanation:
Cardiac muscles are located in the walls of the heart. This muscle helps in the contraction and relaxation of muscles, which in general terms the beating of heart.
The smooth muscles are found in walls of the various visceral organs, except heart. They perform its function by contracting and relaxing.
Both of the muscles operate involuntarily.
