1 Skeletal System

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Across
  1. 3. found between bones
  2. 5. found in center of bones; either contains blood stem cells or stores fat
Down
  1. 1. upper bone of the leg
  2. 2. protects the brain
  3. 4. includes the bones of spine, thorax and skull
  4. 6. located at chest; protects thoracic organs and aids respiration