Do you know your words? Pain concept and exemplars

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Across
  1. 4. increased thirst
  2. 5. cause of pancreatitis
  3. 8. opening of the sphincter
  4. 10. cause of pancreatitis
  5. 11. increased appetite
  6. 15. inflammation of pancreas
  7. 16. painful/difficult breathing
  8. 18. muscle pain
  9. 21. one-sided
Down
  1. 1. fluid surrounding a body cavity
  2. 2. foul smelling fatty stool
  3. 3. of unknown cause
  4. 6. decreased oxygenation
  5. 7. controls hormone secretion
  6. 9. same side
  7. 12. abnormal connection between two body parts
  8. 13. progressive and long
  9. 14. painful/difficult urination
  10. 17. unable to absorb nutrients
  11. 19. excessive urination
  12. 20. symptom of pancreatitis