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Across 4. Small finger-like projections in the small intestine that increase surface area 7. Enzyme that breaks down proteins; released by the stomach 8. Type of digestion done by chemicals 11. Term for food that has mixed with digestive juices, and is traveling through the small intestine 12. Hormone that regulates blood glucose (sugar) levels 13. Organ that stores feces before they are eliminated 18. Third stage of digestion, where nutrients are taken up by villi 19. Salivary glands below the jaw bone 20. Muscular movements that involuntarily move food down the esophagus, and along the digestive tract 21. Name of the sphincter that joins esophagus to the stomach 25. Middle section of the small intestine 27. Site of water absorption 28. Term for solid waste stored in the rectum 30. A shorter-word name for the large intestine 31. Another term for "stomach" juices, that aid in chemical digestion 32. Small blood vessels in villi, where absorbed nutrients meet the bloodstream 34. Muscular organ that digests food in hydrochloric acid 37. Term for food that has been chewed and is traveling through the stomach 38. Salivary glands below the tongue 42. Produces lipase, protease and insulin 43. Muscular organ in your mouth that manipulates food 44. Sharp teeth used to tear meat by carnivores 45. Teeth at the front of your mouth for biting

Down 1. Name of the sphincter that joins stomach to the small intestine 2. First section of the small intestine 3. Produces bile and filters blood 5. Enzyme that breaks down lipids 6. These micro-organisms in your colon help break down waste further, and produce folic acid, vitamins B & K 9. Chemical that initiates chemical reactions in the body 10. Food you eat is broken down into ________ for absorption 11. Nutrients broken down by carbohydrase 12. Sphincter that joins small intestine to large intestine 14. Site of nutrient absorption 15. Small flap of tissue that covers your airway (trachea) when you swallow food 16. Enzyme that breaks down proteins; released by the pancreas 17. All organs that food passes through are made of this tissue, to allow them to stretch 19. A muscular ring that controls movement of food from one area to another 22. Useless organ that hands off the ileum 23. Organ that stores bile 24. Type of digestion done by physical force (ex. chewing) 26. Muscular tube that allows food to travel from the mouth to the stomach 29. Salivary glands at the back of the mouth 30. Area of intestinal tubing where small intestine become large intestine 33. Enzyme released by salivary glands 35. First stage of digestion, by taking in food 36. Slippery slime that allows food to pass through the digestive organs easily 37. Chemical mixture that helps digest fats; released from the liver 39. Last section of the small intestine 40. Sphincter through which food passes to be eliminated from the body 41. Flat teeth at the back of the mouth for grinding and chewing