Skeletal System

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Across
  1. 2. type of fracture in which the bone pierces the skin
  2. 4. protect vital internal organs, including the heart
  3. 5. lower jaw
  4. 7. where red blood cells are created
  5. 10. bone destroying cells
  6. 11. gaps between bones in a baby's skull
  7. 12. strengthens bones and prevents breakage by regular use
  8. 14. your skeletal system is replaced roughly every _______ years
Down
  1. 1. biggest and strongest bone
  2. 2. flexible connective tissue that acts as a cushion between bones at joint
  3. 3. bone mass decreases, causing brittle bones
  4. 6. connect bone to bone
  5. 7. upper jaw
  6. 8. bone building cells
  7. 9. connect muscle to bone
  8. 13. hardest substance in the body