Question

The type of muscle fibres present in the wall of alimentary canal is:

• A. Smooth muscle fibre
• B. Striped muscle fibre
• C. Cardiac muscle fibre
• D. Both A and B

Answer 1

Answer: (A)

Smooth muscle fibres or cells are elongated and spindle-shaped. The main function of these muscle fibres is peristalsis. It happens in tubular viscera. That’s why smooth muscle fibres are present in the wall of the alimentary canal. These are involuntary muscles. The autonomous nervous system controls the action of these muscles. Thus, they are not under the control of one's will.