Framework

• The skeletal system forms the framework for the muscles, ligaments, tendons and other softer tissues of the body.
  
  

Protection

• The skeletal system protects the body's organs and other softer components. It acts as a barrier, making them less likely to become injured.
  
  

Movement

• The skeletal system works with the muscular system to create movement. Ligaments connect the bones to one another, and tendons connect muscles to bones. The muscles extend and contract to create movement.
  
  

Blood Cell Production

• Some bones contain marrow, which produces new blood cells. The skeletal system produces about 2.6 million red blood cells per second.
  
  

Storage of Minerals

• The skeletal system also stores important minerals that the body needs. It stores calcium, phosphorus and other minerals in the bones when the body's supplies are high, and releases some of these minerals into the blood if supplies become low.