Question

What are involuntary muscles? Provide examples

Answer 1

Muscles:

1. Muscle fibers are tiny, elongated cells that make up the muscle.
2. Muscles are involved in all of the body's movements.
3. Muscles are of three types, skeletal, smooth, and cardiac.

Involuntary muscles:

1. The muscles whose functioning cannot be controlled are called involuntary muscles.
2. They are spindle-shaped muscles.
3. These are uninucleated.
4. They are mainly regulated by the autonomic nervous system (ANS).

Example of involuntary muscles:

1. Smooth muscles

• They are found in the walls of internal organs such as the stomach and blood vessels.

2. Cardiac muscles

• Involuntary muscles are striated and branched in the case of cardiac muscle.
• Cardiac muscle tissue is contractile tissue present only in the heart.