Skeletal system

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Across
  1. 3. Protects heart and lungs
  2. 4. middle of rib cage.
  3. 5. At the end of your spinal cord but before your legs
Down
  1. 1. Inside bone of lower leg
  2. 2. outside bone of lower leg
  3. 4. Holds the vertebrae together
  4. 6. ontop of your colar bone