Interactions with Other Systems

    The skeletal system interacts with the muscular system, which is sometimes called the muscular skeletal system, by connecting all muscles to bones to allow the body maximum movement. For example, the biceps muscle is connected to the radius, or forearm. All muscles connected to the bones have a similar function, which is to flex and contract. An example of this is with your arm. When you "flex" your arm, stress is put on your bicep. When you contract, the stress is placed on the tricep. By contracting and flexing your body, your body can move.
    The skeletal system also functions with the circulatory system because the red marrow inside of your bones produce red blood cells. The circulatory system then distributes them around the body. These blood cells are important to the body and they could not be circulated if the marrow had not created them.
    Last, the skeletal system actually works with all systems by protecting them. The skull protects the brain, the spin protects the spinal cord, and the ribs protecte the heart and lungs, just to name a few.