body systems

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Across
  1. 4. pumps blood
  2. 5. dealing with skin
  3. 6. takes blood away from the heart
  4. 7. takes blood back to the heart
  5. 8. take in air
  6. 9. sac after esophagus
Down
  1. 1. takes away the water from the leftovers
  2. 2. one arm muscle
  3. 3. bone in the thigh
  4. 4. joint that only goes back and forth