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40

Across 2. breaks down protein molecules 9. mucous membrane lining of the small intestine 10. system that breaks down food 12. absorbs little water, sugar, and alcohol, and let the chyme pass on 13. last part of the small intestine 14. produced when fats are present 15. concentrate bile 19. slows the emptying of the stomach and controls its churning action 20. fingerlike projections 21. muscular tube 22. mainly concerned with the absorption of water and soluble salts 25. sent out into the ___ for immediate use 27. reduces peptones to amino acids 29. simple sugar 30. muscle that runs around the stomach 32. gland organ in both the digestive and endocrine system 34. stomach's muscle that runs from bottom to top 37. second part of the small intestine 38. enzyme that breaks down food into maltose 39. usually empty 40. secrete bile

Down 1. passes down the intestine by means of peristalsis 3. neutralizes the acid 4. muscle that runs diagonally down in the stomach 5. appears to do nothing 6. lived in colon 7. below the tongue 8. gland near the ear 11. contains 3 parts 16. activates trypsin 17. simpler compounds 18. cell tissue lining 23. at the lower jaw 24. opening at the end of digestive tract 26. first part of the small intestine 28. makes the pancreas produce pancreatic juice 31. number of salivary glands 33. contains salivary glands 35. pushed food into the esophagus 36. thin gruel-like fluid