Skeletal system

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Across
  1. 2. bones in the body
  2. 4. structure for the organs gives the body shape
  3. 9. most common form of arthritis; wear and tear disease
  4. 11. a bone that is in a muscle or tendon that works like a pulley
  5. 12. tough membrane that covers the outside of the bone
  6. 13. thin, bones found in arms and legs (not wrists, ankles, or kneecaps)
Down
  1. 1. disease that develops when bone material density and mass decreases; a silent disease
  2. 3. bone that is flat, includes ribs, shoulder blades, breast bone, and skull bone
  3. 5. cancer starting in the bones, usually occurs in children
  4. 6. cubed shape bones in wrists and ankles
  5. 7. extra bones in the cranium
  6. 8. made of stem cells and makes blood cells
  7. 10. bone that does not conform to the other types; the bones in the spine