[Solved] It's important to know that when you compress a picture, you change the amount of detail in the picture, but it will still appear the same to the naked eye. Muscle Contractions: The process by which muscle fibers produce force and shorten, resulting in movement or maintenance of posture. Eversion: The movement of turning a body part outward, such as rotating the sole of the foot away from the midline of the body. Inversion: Turning the sole of the foot medially. Musculoskeletal System: The organ system that includes bones, muscles, cartilage, tendons, ligaments, and joints supporting movement and form of the body.