Skeletal muscles

           There are three types of muscles in your body: skeletal muscles, smooth muscles, and cardiac muscles. We are going to focus on skeletal muscles. Skeletal muscles are the muscles that help with posture and balance.
           The first thing about your skeletal muscles is that they are voluntary muscles; which means they move when you want them to move, not just by themselves.
           Skeletal muscles, however, are not connected straight to your bones; they are connected by tendons, which attach to the skeleton.
           Although skeletal muscles do all these amazing things for us, they wouldn't be much good without joints.
           There are 4 different types of joints: Hinge joint (elbow), Ball and socket joint (shoulder), Saddle joint (ankle), and Washer joint (vertebrae).

  

    

                                                                   
   1. Hinge joint     2. Ball and socket joint     3. Saddle joint     4. Washer joint

           Around the joints is something called an air capsule, this produces joint fluid for the joint called synovial fluid, joints that contain this fluid are called synovial joints.
          Back to skeletal muscles; there are two main muscles that support your head: sternocleidomastoid muscles and the posterior triangle muscles, one of each on each side.

                                                            Outside muscle: Prostior triangle muscles
                                                          Inside muscle: Sternocleidomastoid muscles

                                                                     

            Muscles and joints work together to make a perfect creation by God.