The Skeletal System

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Across
  1. 4. bones The bones that produce red blood cells
  2. 6. Shaft of the bone
  3. 7. Top section of the spine
  4. 8. Kneecap
Down
  1. 1. Bone at the top of the arm
  2. 2. Number of ribs
  3. 3. The process of the bones hardening in the womb
  4. 5. Fingers and toes