Skeletal System Crossword

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Across
  1. 3. marrow that produces red blood cells (RBCs)
  2. 4. hard, dense bone that stores calcium
  3. 5. vertebrae are classified as this type of bone
  4. 6. marrow that stores fat
  5. 8. membrane made of connective tissue that surrounds bones
  6. 9. the ribs are classified as this type of bone
Down
  1. 1. tissue found at the ends of bones that keeps them from rubbing together
  2. 2. lightweight inner bone containing marrow
  3. 5. bone with a complex shape
  4. 7. bones that are as wide as they are long