Question

Question 13

Involuntary muscles with characteristic striations are

• A. Muscles in the wall of the alimentary canal
• B. Muscles of the heart
• C. Muscles assisting locomotion
• D. Muscles of the eyelids

Answer 1

The correct option is B

Muscles of the heart

Cardiac muscle fibres are connected to both central and autonomic nervous system and are not under the control of the will of the animal, i.e., they are involuntary. These muscles possess striation but they never get fatigued as the myofibrils of heart have transverse faint dark and light bands which alternate with each other giving them striped appearence.

Muscles of the wall of alimentary canal are smooth muscle, i.e., non-striated and involuntary. Muscle assisting locomotion, i.e., skeletal muscles are striated and voluntary. Muscles of eyelid are involuntary.