2.4 to 2.5 Crossword

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Across
  1. 1. bones in the hip area
  2. 3. organ system made of 206 bones
  3. 9. bones that go down the back
  4. 10. bones in the head that protect the brain
  5. 13. the soft inner layer of bones
  6. 14. the hard outer layer of bones
  7. 15. someone with weak bones might have this skeletal system disease
  8. 16. bones that protect the heart and lungs
  9. 17. material inside bones responsible for creating blood cells
Down
  1. 2. the type of muscle that is connected to the skeleton
  2. 4. cells that can turn into other cell types
  3. 5. the heart is made of this type of muscle
  4. 6. organ system made of muscles
  5. 7. the heartbeat is this type of muscle contraction
  6. 8. activation of a muscle to produce force
  7. 11. tissues that connect muscles to bones
  8. 12. a muscle contraction that is intentional