1. By, Sam Carelli and Abhishek Patel

2. What is the skeletal system ?  The skeletal system is a network of bones that protects organs.  Transports nerves.  Gives you body a shape.  Is responsible for making cells.

3. What are 4 layers of bones?  The outer surface is the Periousteum bone. It is a dense membrane that contains nerves and blood vessels. It is responsible for nourishing bones.  The next layer is the Compact bone. This is the bone you see. It is the strongest layer of bone.  Inside the compact bones there are many layer of Cancellous bones. They are a little bit softer and look like sponges. It is the 3 rd layer of bones.

4. Continued…  Inside that is the Bone Marrow which makes cells.

5. Are your bones alive?  They are definitely alive.  Bones are made of a hard, thick membrane which is what gives it its strength.  Underneath membrane are millions of cells.  Bones are used to make cells also.

6. What are some important bones?  The Skull covers the brain.  The Rib cage protects a lot of internal organs.  The Spine protects the nerve cord. It also allows us to bend down or back or sideways.

7. Important bones continued…  The Pelvis lets you walk bipedal(on two feet).  The Femur supports the body so you can walk on two feet.

8. Work cited  Website names-http://kidshealth.org/ Website nameshttp://kidshealth.org/  http://yucky.discovery.com/noflash/body/pg000124.html http://yucky.discovery.com/noflash/body/pg000124.html  http://library.thinkquest.org/5777/ske1.htm http://library.thinkquest.org/5777/ske1.htm