Body systems crossword

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Across
  1. 1. leads to organ damage
  2. 4. biggest bone in your body
  3. 5. sleep hormone
  4. 8. Keeps your hand on
  5. 9. wormholes in your head
  6. 10. pea-sized hormone creater
  7. 12. Production of eggs
Down
  1. 2. Metabolism controler
  2. 3. waiting area for eggs
  3. 6. oxegens highway to the lungs
  4. 7. filters blood and returns
  5. 11. Where the air goes