What is considered a characteristic of voluntary muscle?

Voluntary muscle is characterized primarily by being striated and having the capability to move the skeleton. This type of muscle, also known as skeletal muscle, is under conscious control, allowing for intentional movements such as walking, running, and lifting.

The striated appearance of voluntary muscle fibers results from the organized arrangement of actin and myosin filaments, which are responsible for contraction. This unique structure enables efficient and powerful contractions that are essential for movement. Additionally, skeletal muscles are typically attached to bones via tendons, which translates muscular contractions into movements of the skeleton, enabling complex actions crucial for daily activities.

In contrast, the other options describe features not associated with voluntary muscle; unconsciously controlled muscles refer to involuntary muscles like smooth and cardiac muscles, which function without conscious thought. Smooth muscles are not striated, and while they can tire less quickly than skeletal muscles, they are not part of the voluntary muscle group.