Skeletal System
Across
- 2. the outer surface of the bone
- 4. most people have 12 pairs of me
- 6. made up of 33 bones and is in the back
- 7. 206 of this in the adult human body
- 9. wear this to protect your skull
- 10. each arm is attached to this
Down
- 1. the first 7 ribs are attached to the front of me
- 3. a bone below the elbow
- 5. protects the brain
- 8. the longest bone in the body