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Across 3. This disease is caused by lack of sunlight and makes bones very 5. The tip of your nose is made of this. 6. Your shoulder is one of these. 9. Your neck is one of these joints. 10. This produces red blood cells. 11. Muscles working together to do certain job. 12. This type of muscle enables you to do all voluntary 13. These muscles do most involuntary actions in the body. 16. Your knee and elbow are one of these joints. 18. An injury that happens to your bones. 19. Your bones need this to stay healthy and strong. 20. The bones that make up your fingers and toes.

Down 1. MRI. 2. You only have one muscle of this type in your body. 4. Acts as a shock absorber for bones. 7. These muscles are paired with the triceps to allow you to move 8. The backbone is made of these. 9. Your bones need this to stay strong and healthy. 14. The bone that protects your brain. 15. Muscles can only _________ so they have to work in pairs. 17. Helps see through skin to see if a bone is broken.