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Across 2. Produced within bones 10. Set of bones that includes your limbs 13. The action at your knee when you kick a ball 14. Without this we would be stood still 15. Protects your brain 17. A collection of 12 bones 18. Where two bones meet 19. movement occured when you are shortening the muscle 20. Bones that give leverage 21. Attach muscle to bone

Down 1. The largest bone in your body 3. Joint with the most amount of movement 4. Process of bone growth 5. Link bone to bone 6. Spinal Column 7. Shock absorber at the end of bones 8. These bones protect vital organs 9. Upper arm bone 11. a swimmers shoulders would be doing this when they are moving in the water 12. Freely moveable joints 16. Set of bones including your ribs and sternum,