Which of the following is a characteristic of cardiac muscle tissue?

• A. It is attached to bones and responsible for body movement.
• B. It is non-striated and involuntary.
• C. It is striated and involuntary.
• D. It is multinucleated and voluntary.

Answer: (C)

Verified step by step guidance

1. Understand the characteristics of cardiac muscle tissue: Cardiac muscle is a specialized type of muscle tissue found only in the heart. It is responsible for pumping blood throughout the body.
2. Compare cardiac muscle tissue to other muscle types: Skeletal muscle is striated and voluntary, smooth muscle is non-striated and involuntary, and cardiac muscle is striated and involuntary.
3. Focus on the term 'striated': Striations refer to the striped appearance of muscle tissue under a microscope, which is due to the arrangement of actin and myosin filaments. Both skeletal and cardiac muscles are striated.
4. Focus on the term 'involuntary': Involuntary muscles are controlled by the autonomic nervous system, meaning they function without conscious control. Cardiac muscle is involuntary because the heart beats automatically without conscious effort.
5. Conclude that the correct characteristic of cardiac muscle tissue is 'It is striated and involuntary,' as this aligns with its structure and function in the body.