1																				2		3
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22
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Across 6. Innermost lining of the digestive system 10. Layer of the mucosa which supports the epithelium 11. Secreted into saliva to destroy bacteria 12. Sharp, front teeth used for biting 14. Muscle between the esophagus and stomach 16. Combination of food from the stomach and gastric juice 17. Secreted into saliva to breakdown starch 19. Layer of the mucosa consisting of two layers of smooth muscle 21. Muscle between the stomach and small intestine 22. Tube connecting the pharynx to the stomach 23. Number of smooth muscle layers in the muscularis of the stomach 26. Secreted into saliva to breakdown lipids 27. Cells of the stomach which secrete pepsinogen 28. Portion of the stomach where it joins the small intestine 30. Another term for swallowing 33. Left superior portion of the stomach 34. Breakdown of food by the teeth and tongue, mixing food with saliva 36. Flat teeth with sharp cusps used to crush food 38. Outermost layer of the digestive system used in protection 39. Salivary gland located under the tongue and floor of the mouth 40. 3rd layer of the digestive system, containing either skeletal or smooth muscle depending on the section of the digestive system it is in

Down 1. Tube connecting the oral cavity and esophagus 2. Cells of the stomach which secrete mucus to protect the lining of the stomach 3. Mixing of food with enzymes by the stomach and intestines 4. Salivary gland located near the ears 5. Soft, inner part of a tooth 6. Secreted into saliva by the sublingual and submandibular glands to coat food in mucus 7. Flat teeth used for mashing food 8. Cells of the stomach which secrete hydrochloric acid 9. Portion of the stomach where it joins the esophagus 13. 2nd major layer of the digestive system which binds the mucosa to the third layer 15. Digestion of food by enzymes and acids 18. Combination of chewed food and saliva 20. Layer of the mucosa in contact with the contents of the digestive tract 21. Involuntary waves of muscle contraction pushing the bolus through the esophagus 24. The process of breaking down food into components used by body cells 25. Salivary gland behind the sublingual, near the incisors 29. Digestion of food by chewing and churning 31. Enzyme formed from pepsinogen combining with acid 32. Hard, external layer of a tooth 34. Fang-like teeth used for tearing 35. Folds in the wall of the stomach 37. Large central portion of the stomach