What type of muscles are not under conscious control?

Involuntary muscles are not under conscious control, meaning that their movement and function are regulated automatically by the body without needing direct effort or thought from an individual. This type of muscle is responsible for various automatic processes critical for survival, including the functioning of internal organs, such as the stomach, intestines, and blood vessels.

Involuntary muscles handle essential functions like digestion and circulation without requiring any deliberate action from the person. Examples of involuntary muscles include smooth muscles found in the walls of hollow organs and cardiac muscles, which make up the heart; however, the defining characteristic is that these types of muscles operate independently of conscious thought.

This distinguishes them from voluntary muscles, which a person can control consciously, such as those used for moving arms and legs. Thus, the function and nature of involuntary muscles align perfectly with the question asked.