Across
- 1. consists of 22 bones, supports the face and protects the brain
- 3. when the weather hot, skin will produce ....
- 4. outer layer of skin
- 7. protects our lungs and heart
- 9. the longest and strongest bone in your body
Down
- 1. covers and protects everything inside your body
- 2. the basic building block of all living thing
- 3. backbone
- 5. center of bones, where blood cells are made
- 6. part of skull, helmet that protects brain
- 8. made up of collagen and calcium