What is the purpose and structure of the skeleton? 1. Supports and protects the softer parts of the body (the very important organs! )P
The brain is protected by the skull. The heart and lungs are protected by a strong rib cage. It is also protected by the breast bone (sternum) at the front and vertebral spinal column at the back. The spinal cord is protected by the vertebrae (bones of the spine). The intestines and reproductive organs are protected by the pelvis. 2. Supports our body through a framework of bones. Bones are not solid. The hard outer layer of the bone protects the light, porous (not solid) bone inside. This porous bone contains the marrow, which is the factory where red blood cells are produced a process called haematopoiesis. Red blood cells carry oxygen around the body, providing energy for our muscles. However, before we are born, all of our bones begin as a rubbery material called cartilage. As we grow, more and more deposits of calcium are laid down which change some of the cartilage into a more solid and rigid mass bone. act as an anchor for muscles which together, along with other soft tissues, make the body move. contain calcium and other minerals which make them hard (rigid) and provide strength. supply the body with calcium when the diet is calcium deficient. 3.