ISSA Bodybuilding Practice Test 2026 – Complete Exam Prep

Skeletal muscle is the type of muscle responsible for voluntary movements and is characterized by its striated appearance. This muscle type is intentionally controlled by the nervous system, allowing individuals to perform actions such as lifting weights or running. Skeletal muscle fibers are long and cylindrical, and they come together to form tendons, which attach the muscles to bones. This arrangement enables the transfer of force generated by muscle contraction to move the skeleton.

In contrast, cardiac muscle, which is found exclusively in the heart, functions involuntarily to pump blood throughout the body. Smooth muscle, located in the walls of hollow organs like the intestines and blood vessels, is also involuntary and controls functions such as digestion and blood flow. Elastic muscle, while not a widely recognized category, isn't classified within the standard muscle tissue types typically discussed in muscle physiology. Therefore, skeletal muscle distinctly fits the description of being responsible for voluntary movements and attaching to bones via tendons.