Wisconsin Esthetics State Board Practice Test

What is a characteristic feature of skeletal muscles?

1. They are non-striated

2. They respond automatically

3. They are striated and under voluntary control

4. They do not connect to bones

The correct answer is: They are striated and under voluntary control

Skeletal muscles are characterized by their striated appearance, which is due to the organization of muscle fibers in a way that creates alternating light and dark bands. This striation is an indication of the muscle’s structure, allowing for coordinated contractions. Additionally, skeletal muscles are under voluntary control, meaning they can be consciously contracted and relaxed. This allows for precise movements, which is essential for activities such as walking, running, and other physical actions. The ability to control these muscles voluntarily distinguishes them from other muscle types, like smooth or cardiac muscles, which operate automatically and involuntarily. In contrast, the other options describe features that are not associated with skeletal muscles. Non-striated muscles refer to smooth muscles, which are found in the walls of hollow organs and are not under voluntary control. The notion of automatic response is more applicable to cardiac and smooth muscles, which function involuntarily. Lastly, skeletal muscles are specifically designed to connect to bones, facilitating movement and stability in the skeletal system. This connection through tendons allows for the functional purpose of skeletal muscles in locomotion and posture maintenance.