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Help? Anatomy & Physiology (Digestive System Exam Review)?

hi :) mm i was trying to work on my exam review, but i really can't find some of the answers.. well most of it.. can anybody help me? these are the questions.. might be alot.. O_o; 3.What is the type of epithelial tissue that is designed for absorption and secretion found throughout much of the GI tract? 4.Trace the course of a food bolus as it enters the epithelial tissue esophagus and leaves the rectum? 5.An incision into the wall of the GI tract would cut the mucosa, submucosa, muscularis, and serosa. 6.Place these tissues structures in order from the lumen to the outside. 7.Which of the following organs has a mucosal layer that is composed of columnar epithelium with a brush border of microvilli to enhance absorption? 8.What is the structure that controls the opening of the stomach into the small intestine? 9.In the stomach, what is the role of chief cells and parietal cells? 10.Briefly describe the locations of the pyloric sphincter, cecum, appendix and transverse colon. 11.What are the parts of the small intestines? Which portion connects directly with the stomach? 12.What is the part of the colon that lies in the vertical position, on the left side of the abdomen, extending from a point below the stomach and spleen to the level of the iliac crest. 23.Which conditions aggravate acid reflux? 35.Where is the major source of absorption of in the digestive tract? 36.What is the role of Bicarbonates in the GI tract? 37.Which blood vessel carries absorbed food from the GI tract to the liver? 39.What substances are absorbed into the lymph capillaries? thanks in advance :)

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1. 3. Simple columnar cells 4. Esophagus-Stomach-Duodenum-Jujenum-ileum-cecum-colon-rectum-anus. 5. The reverse 6. mucosa, submucosa, muscularis, and serosa. 7. Small intestine 8. Pyloric sphincter 9. Chief cells secrete pepsinogen while parietal cells secrete HCL & Intrinsic factor 10.pyloric sphincter-above dodenum, cecum-below ileum, appendix-at the side of cecum and transverse colon-between ascending & decsendin colon. 11. Duodenum 12 Descending colon 23. Abusing Nonsteroidal antiinflammatory drugs, alcohol. 35. villi 36.Neutralizing Acidity 37. portal vein 39. Fatty acids and glycerol