Which type of muscle is responsible for voluntary movements in the body?

Skeletal muscle is the correct answer because it is primarily responsible for voluntary movements in the body. This type of muscle is under conscious control, which means that individuals can directly dictate its actions, such as when lifting an arm, walking, or performing other activities that require purposeful movement.

Skeletal muscle fibers are characterized by their striated appearance, which refers to the banded look seen under a microscope, demonstrating the organized structure that aids in coordinated contractions. These muscles are typically attached to bones by tendons, allowing for movement of the skeletal system.

While striated muscle refers to the visual aspect of skeletal muscle and some components of cardiac muscle, it does not specify the control mechanism (voluntary vs. involuntary). Cardiac muscle, found only in the heart, operates involuntarily and is not under conscious control. Involuntary muscle, such as smooth muscle, controls movements not consciously regulated, such as digestion or blood vessel constriction. Thus, skeletal muscle distinctly defines voluntary movement, separating it from the other muscle types listed.