The skeletal system (1)

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Across
  1. 3. 33 irregular interlocking bones that form the spinal column
  2. 7. bones of the fingers and toes
  3. 8. largest bone in the human skull; jawbone
  4. 10. health condition that weakens bones
Down
  1. 1. encases the brain and includes facial bones
  2. 2. shoulder blade
  3. 4. main weight-bearing bone in the lower leg; shinbone
  4. 5. smooth, slippery substance which protects the end of the bones
  5. 6. longest bone in the body
  6. 9. collarbone