The skeletal system (1)

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