What does the esophagus secrete?

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Tags

  1. #foodstuffs
  2. #mucus
  3. #physiologic
  4. #bounded
  5. #mucous
  6. #lubrication
  7. #expressed
  8. #esophageal
  9. #contain
  10. #upper
  11. #esophagus
  12. #sphincters
  13. #known
  14. #lower
  15. #secreted
  16. #glands
  17. #distend
  18. #allowing
  19. #mucosa