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Digestive System Histology and Models

Digestive System Histology and Models. Glands and Tonsils on the Models. Submandibular gland Sublingual gland Parotid gland Palatine tonsil Pharyngeal tonsil. Glands. Parotid gland Submandibular. Glands. Sublingual Submandibular. Pharyngeal tonsil. Palatine tonsil. Stomach.

rebekah-mullins
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Digestive System Histology and Models

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  1. Digestive System Histology and Models

  2. Glands and Tonsils on the Models • Submandibular gland • Sublingual gland • Parotid gland • Palatine tonsil • Pharyngeal tonsil

  3. Glands • Parotid gland • Submandibular

  4. Glands • Sublingual • Submandibular

  5. Pharyngeal tonsil Palatine tonsil

  6. Stomach Cardiac region Fundus region Lesser curvature Body region Greater curvature Pyloric region

  7. Stomach Pyloric sphincter Plicae circularis Rugae Duodenum

  8. PANCREAS AND SPLEEN MODELS • Kidney • Gall bladder • Pancreas • spleen (function is to remove foreign antigens and aging RBC’s) • duodenum • plicae circularis

  9. Spleen Plicae circularis Pancreas Duodenum

  10. Pancreas Gall bladder Spleen Kidney Plicae circularis Duodenum

  11. GI MODEL • Stomach • Pancreas • Spleen • Pyloric sphincter • circular folds (known as plicae circularis; these are macroscopic folds in the mucosa) • ascending colon • transverse colon • descending colon • tenia coli • Jejunum (middle part of small intestine) • Ileum • Cecum • Ileocecal valve • Appendix • Rectum •  NOTE: Plicae circularis, microvilli, and villi all increase the surface area of the small intestinal lining

  12. GI Model

  13. Pyloric sphincter Stomach Duodenum Spleen Pancreas Plicae circularis

  14. Transverse colon Tenia coli Ascending colon Descending colon Jejunum Rectum

  15. Ileocecal valve Ileum Cecum Plicae circularis Appendix Tenia coli Rectum

  16. INTESTINE MODEL • Stomach • Pancreas • Spleen • Pyloric sphincter • circular folds (known as plicae circularis; these are macroscopic folds in the mucosa) • ascending colon • transverse colon • descending colon • tenia coli • Jejunum (middle part of small intestine) • Ileum • Cecum • Ileocecal valve • Appendix • Rectum •  NOTE: Plicae circularis, microvilli, and villi all increase the surface area of the small intestinal lining

  17. Duodenum Pancreas Greater Omentum Tenia coli Transverse colon Jejunum Cecum

  18. Pancreas Common bile duct Duodenum Tenia coli Descending colon Mesentery Appendix Ascending colon Cecum Sigmoid colon (first half)

  19. Other half of the Sigmoid colon

  20. Liver Models • gall bladder • cystic duct • common bile duct • falciform ligament

  21. Liver CYSTIC DUCT, GALL BLADDER COMMON BILE DUCT (has been cut) Falciform ligament

  22. SLIDES • Salivary gland • Tongue • taste bud • Small Intestine • Villi • Intestinal crypt

  23. Salivary gland

  24. Salivary gland

  25. Tongue Taste buds

  26. SLIDES • Small intestine • Villi, microvilli, and plicae circularis: (Serve to increase the surface area of the small intestine) • Intestinal crypts

  27. Small Intestine Villus Intestinal crypt

  28. SLIDES • Liver: the functional unit of the liver is the lobule. • central vein

  29. Liver Lobules

  30. Liver Lobule • Central vein

  31. Liver

  32. SLIDES • Spleen: removes foreign antigens and aging RBC's • Red pulp • White pulp • Pancreas • Islets • Acini • Be able to tell the difference between liver, spleen, pancreas, and kidney slides!

  33. Spleen

  34. Spleen Red Pulp White pulp

  35. Pancreas Islet of Langerhans (secretes insulin)

  36. Pancreas Acinar cells (secrete enzymes) Islet of Langerhans (secretes insulin)

  37. Kidney Tubule Glomerulus

  38. Pancreas Kidney

  39. Spleen Liver Central vein Red Pulp White pulp

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