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Oral vestibule

Oral cavity proper. Internal nares. Fauces. Oral vestibule. Esophagus. Oropharynx. Auditory / Pharyngo- Tympanic tube. Cribiform plate of ethmoid. Frontal sinus. Sphenoidal sinus. Nasophayngeal tonsil. Chonchae / turbinates. Soft palate. Palatine tonsil. Uvula. Lingual

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Oral vestibule

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  1. Oral cavity proper Internal nares Fauces Oral vestibule Esophagus Oropharynx

  2. Auditory / Pharyngo- Tympanic tube Cribiform plate of ethmoid Frontal sinus Sphenoidal sinus Nasophayngeal tonsil Chonchae / turbinates Soft palate Palatine tonsil Uvula Lingual tonsil Epiglottis Cricoid cartilage

  3. Enamel Crown Dentin Neck Gingiva Cementum Periodontal ligament Alveolar bone Root Root canal with blood vessels and nerves Pulp cavity With blood vessels and nerves

  4. Common bile duct Pancreatic duct Duodenal papillus (major) Plica circulares of duodenum Hepatopancreatic ampulla in the duodenal wall

  5. Gall bladder Spleen Liver Cystic duct Adrenal gland Hepatic duct Kidney Duodenum Head, body and tail of the pancreas

  6. Pancreatic duct Common Bile Duct Plica circulares Spleen Duodenum

  7. Common bile duct Hepatic portal vein Cystic duct Hepatic artery Hepatic duct Round ligament (remnant of umbilical vein) Gall bladder

  8. Lacteal Villi Simple columnar epithelium Crypt of Lieberkuhn Muscularis mucosae Submucosa Circular and Longitudinal layers Of muscularis externa Serosa

  9. Lacteal (green) Villi Lymphatic nodule/ Lymphatic follicle Lamina propria Muscularis mucosae Submucosa with many blood vessels Circular layer of Muscularis externa Longitudinal layer Of muscularis externa

  10. Villi Lacteals Lymph nodule/follicle Crypt of Lieberkuhn Muscularis mucosae Circular and Longitudinal layers of the Muscularis externa

  11. Ulcerative colitis Diverticula Adhesions Irritable Bowel/ Spastic colon Bacterial infection Crohn’s disease (enteritis) Cancer Polyps Appendicitis

  12. Transverse colon Haustra Ascending colon Descending colon Taenia coli Ileocecal valve Sigmoid colon Cecum Rectum

  13. Inner oblique layer of muscle Middle circular layer of muscle Outer longitudinal layer of muscle

  14. Fundus Cardia Pylorus Body

  15. Pylorus Esophagus Site of lower esophageal sphincter/Cardiac sphincter Lesser curvature Pyloric valve/ sphincter Rugae Greater curvature

  16. Lingual tonsil Sublingual gland Submandibular gland

  17. Circumvallate papillae Lingual tonsil Sublingual gland Submandibular gland and duct

  18. Lingual tonsil Sublingual gland Epiglottis Submandibular gland Arytenoid cartilage Cricoid cartilage Trachealis muscle

  19. Enamel Dentin Gingiva Pulp cavity Alveolar bone Root canal Cementum Apical foramen Periodontal ligament

  20. Lacteal Villi Simple columnar epithelium Crypt of Lieberkuhn Muscularis mucosae Lymphatic vessels Goblet cells Circular and Longitudinal layers Of muscularis externa Serosa

  21. Submandibular duct (Wharton) Sublingual ducts (Rhivinus) Parotid gland Parotid duct / Stenson’s duct Sublingual gland Submandibular gland

  22. Lesser omentum Esophagus Pylorus Fundus Body Greater omentum Cardia

  23. Low magnification of numerous filliform papillae on surface of tongue

  24. Numerous Filliform Papillae (note lack of taste buds) Skeletal Muscle of Tongue

  25. Foliate or Fungiform Papillae Taste Buds

  26. Taste Buds Stratified squamous epithelium Foliate or Fungiform Papillae on Tongue

  27. Gustatory Pore Gustatory Cells In Taste Bud Taste Buds Stratified squamous epithelium

  28. Gustatory pore with free nerve endings Nuclei of Gustatory Cells Magnified Taste Buds

  29. Liver Central veins in center of Hexagonal lobes Portal triads

  30. Liver Portal triad containing branches of hepatic portal vein, hepatic artery and bile duct Hepatocytes

  31. Numerous Peyer’s Patches Duodenum Jejenum Ileum

  32. Crypts of Lieberkuhn Villi Muscularis mucosae Brunner’s or Submucosal glands Muscularis externa, Circular layer

  33. Muscularis Mucosa Submucosa Villi Lumen of GI Tract Outer Longitudinal Layer Inner Circular Layer of the Muscularis Externa Peyer’s Patches in the submucosa Of the ileum

  34. Peyer’s Patches in the submucosa Muscularis (externa) Submucosa Ileum Villi Lumen

  35. Parotid gland Parotid duct / Stenson’s duct Sublingual gland Submandibular gland

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