The Skeletal System

1. The Skeletal System By: Will Harrell

2. The Functions of the bones • The bones are often a stereotyped protective framework for our body. • The bones are constantly changing shapes depending on the force you put on them. • The bones have crucial nutrients and produce blood cells vital for fighting off infections.

3. Parts of the bones • The outer layer is the periosteum. • The next layer is the compact bone. • Within the compact bone is the cancellous. • Cancellous is also known as bone marrow.

4. Bones growth • A baby's bone is small and soft but as the baby grows the bones grow together and the cartilage from when you were little is slowly replaced by calcium. That’s how bones grow.

5. Interesting facts • Your skull has changed since you were little. • The smallest bone in your body is anywhere from .1 to .13 inches. • The lower jaw bone is the only bone in the skull you can move. • Between your wrist, hands, and fingers you have 54 bones.

6. Broken Bones • The most common type of fracture are a opened fracture and a closed fracture. Some others are a simple fracture and a compound fracture. The difference in the two are a simple fracture is not poking out of the skin like a compound would.

7. Simple fracture My buckled radius

8. Compound fracture

9. Radius and ulna This is what my 3d model represents. The radius being the smaller bone and the ulna being the bigger bone.

10. Bibliography • www.Kidshealth.org • www.usi.edu • arthritis-symptom.com • http://www.cliffsnotes.com • http://www.merriam-webster.com/