Skeletal System. Skeletal System Overview. A newborn baby has 305 bones. As a human develops to the age of 25, some bones fuse together to obtain maximum strength. The average human skeleton has 206 bones. Largest bones – Thigh (Femur) and the Upper Arm (Humerus).
Support –Provide support for tendons and ligaments and the framework for body shape.
Protection – The cranium protects your brain, the ribs and sternum protect your internal organs such as heart and lungs.
Movement – Bones work with muscles to produce movement. Muscles are attached to the skeleton and work by contracting (shortening) and pulling on bones.
Storage – Bones are the site for storage and release of excess minerals. These are released as the body requires.
Blood production – Some bones (ribs, vertebrae, humerus and femur) contain red bone marrow. This makes red cells, white cells and platelets for blood.