The vertebral body is made up of different types of muscular systems that allow the body to maintain posture, move and also circulation of the blood. In this experiment, we focused primarily on the skeletal muscle system. The skeletal muscles work simultaneously with bones of the skeleton. The muscles are able to attach to the bones through tendons. They are under voluntary control of the Peripheral Nervous System and specifically the Somatic Nervous System. Through this joint association, both the skeletal muscles and the bones allow the animal to perform mechanical movement of the body. On a microscopic level, skeletal muscles are composed of muscle fibers, which are also known as muscle cells that allow the muscle to appear striated.