The Skeletal and Muscular System
Bones in the body form joints. There are four types. Ball and socket joints, knee joints, saddle joints, and gliding joints. ligaments connect bones to bones. Tendons connect muscle to bone. And nerves tell the muscles how to move the bones.
Scoliosis is the unnatural curvature of the spine in a "c" or "s" shape. It is mostly developed during childhood from slouching and can cause back pain and can change the nerve signal from the spinal cord.
Arthritis is joints in the body being inflamed. It causes major pain and keeps movement to a minimum. This can be developed during late adulthood years.
The Muscular System
ATP binds to a Myosin head,then they attach to actin to form a cross bridge. This causes a sliding motion and ADP is released which changes the myosin head, actin slides to the center of the sacromere. Two z disc are pulled together to form a power stroke. Everything slides back into place and relaxes.
Tendonitis is when a tendon becomes inflamed. It can occur anywhere but mostly in the major joint areas. There is some swelling and tenderness. treatment can be pain medication, ice, and rest. It can happen to someone who labors a lot.
Cramps are a result of muscle fatigue from hard labour and dehydration. Stretching and hydration are the best remedies.