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GI Sequence - Histology

GI Sequence - Histology. Small and Large Intestines Recto-anal junction January 16, 2008. #29 Small Intestine. Submucosa (connective tissue). Mucosa (epithelium + lamina propria). Lumen. Muscularis mucosae. Mesentery (ct + epithelium). Muscularis Externa (smooth muscle).

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GI Sequence - Histology

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  1. GI Sequence - Histology Small and Large Intestines Recto-anal junction January 16, 2008

  2. #29 Small Intestine Submucosa (connective tissue) Mucosa (epithelium + lamina propria) Lumen Muscularis mucosae Mesentery (ct + epithelium) Muscularis Externa (smooth muscle)

  3. #29 – Intestinal Villi Intestinal villi

  4. #29-Simple columnar epithelium with striated border (microvilli) and goblet cells Enterocytes ? Goblet cells Microvilli (striated border)

  5. Pylolic StomachPylo-duodenal junction (arrow) Pyloric sphincter muscle

  6. #161 Pylo-duodenal J. with Pancreas Pancreas Pyloric stomach Duodenum

  7. #161 Brunner’s gland Muscularis mucosae Lymphatic nodules

  8. #161, 162 Duodenum ? Brunner’s glands pancreas Muscularis mucosae ? crypts or i. glands Intestinal villus Lumen

  9. #29, 168, 169, 170 Jejunum or Ileum lumen Muscularis mucosae submucosa Crypts of Lieberkuhn

  10. #29, Intestinal glands (crypts) Mitotic cell ? ? ? Enteroendocrine cells Paneth cells

  11. #246 Enteroendocrine cell Paneth cell

  12. #29, Myenteric (Auerbach’s) plexus Ganglion cells

  13. #176, 177: Colon (Mucosa of the colon) m.m No villi, Straight glands, lots of goblet cells

  14. #176 – colon mucosa

  15. #175: Appendix Mucosa is like colon: no villi, straight glands Muscularis externa is like small intestine: Two layers of s. muscle Heavy infiltration of lymphatic tissues forming nodules.

  16. #177-1, 177-3, 177-2 Recto-anal junction Hemorrhoidal veins Muscularis mucosae Type of epithelium changes Muscularis mucosae frays Dilated veins

  17. Cardio-esophageal junction(arrow)

  18. Chief cells Paneth cells Parotid gland acinar cells Mixed salivary glands Serous demilune cells Serous acinar cells von Ebner’s gland

  19. #170 Small Intestine

  20. #194 Gallbladder Mucosa epithelium lamina propria Smooth muscle Simple columnar ep. Adventitial c.t. Liver

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