Functions of Bones:

There are 206 bones in a typical human body, providing an important range of functions. They:

• Provide a framework that supports the body
• Protect the organs within the body cavities against mechanical injury, e.g. the rib cage protects the heart and lungs, the skull protects the brain
• Contain and protect the red bone marrow, where red blood cells (or erythrocytes), white blood cells (or leukocytes) and lymph cells are formed
• Provide a storage site for inorganic salts such as calcium and phosphate
• And by providing the site of attachment of muscles, they create a system of levers which can be used to create motion in the body