Bones

                                            What are the bones? The bones form the skeleton of the body. We have 206 bones in our bodies while babies have 300 bones.

 How does our body make them? The bones start off as cartilage. They are made from the same minerals as a tiger’s sharp claw. It is composed mainly of calcium phosphate and calcium carbonate. Muscles pull against the bones to make the body move.

How do they grow and repair? They grow with the help of calcium. The bones of a child’s bones fuse together to make the bones 206 adult bones.  How the bones heal themselves is that the body forms a blood clot around the fracture to protect it. Bone cells start to grow into both sides of the fracture. Then in closes it up.