Question

In a smooth muscle, striations are not seen because

• A. It is not attached with skeleton.
• B. It has no actin myosin.
• C. Actin and myosin are not well organized into filaments.
• D. Actin and myosin form invisible filaments.

Answer 1

Answer: (C)

Actin and myosin are not well organized into filaments.

Skeletal and cardiac muscle are types of striated muscle. Striations are the result of the overlapping patterns of actin and myosin filaments in the muscles. Although smooth muscle has actin and myosin filaments, it does not appear to be striated as these filaments are not arranged as orderly as they are in the other two types of muscle.

So, the correct answer is option C.