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GI System: Esophagus & Stomach Laboratory Orientation

GI System: Esophagus & Stomach Laboratory Orientation. #126 H&E Mid-esophagus. Lamina propria. Muscularis mucosae. Muscularis Externa. Submucosa. Mixed smooth and skeletal muscle. Skeletal muscle. Submucosal sero-mucous gland. #126 Esophagus Also #153. Muscularis mucose.

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GI System: Esophagus & Stomach Laboratory Orientation

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  1. GI System: Esophagus & Stomach Laboratory Orientation

  2. #126 H&E Mid-esophagus Lamina propria Muscularis mucosae Muscularis Externa Submucosa Mixed smooth and skeletal muscle Skeletal muscle Submucosal sero-mucous gland

  3. #126 Esophagus Also #153 Muscularis mucose Submucosal gland

  4. Muscularis Externa of mid-esophagus (#126):Skeletal and smooth m. Muscularis Externa of lower esophagus (#155): Smooth muscle only

  5. #155: Cardiac StomachCardio-esophageal junction(arrow) Cardiac glands

  6. #156: Fundic Stomach Rugae

  7. Mucosa of the Fundic Stomach Muscularis mucosae Lymphatic nodule

  8. #156, #157: Gastric glands Gastric pit lined by surface mucous cells Mucous neck cells Fundus or body

  9. #157: Body of the gastric glands

  10. #157: Base of the gastric glands Parietal cells Chief cells

  11. #162 Pylolic StomachPylo-duodenal junction (arrow) Duodenum Pyloric sphincter muscle

  12. Fundic (gastric) glands: straight glands pit:gland=1:5 Cardiac glands: coiled (mucous) glands pit:gland=1:1 Pyloric glands: coiled (mucous) glands pit:gland=2~3:1

  13. GI System: Small and Large Intestine Laboratory Orientation

  14. #29 Small Intestine Submucosa (connective tissue) Mucosa (epithelium + lamina propria) Lumen Muscularis mucosae Mesentery (ct + epithelium) Muscularis Externa (smooth muscle)

  15. #29 – Intestinal Villi Intestinal villi

  16. #29-Simple columnar epithelium with striated border (microvilli) and goblet cells Enterocytes ? Goblet cells Microvilli (striated border)

  17. #162 Pylo-duodenal junction (arrow) Pyloric sphincter muscle

  18. #161 Pylo-duodenal Junction and Pancreas Pancreas Pyloric stomach Duodenum Pyloric stomach Pancreas Duodenum

  19. #161 Brunner’s gland Muscularis mucosae Lymphatic nodules

  20. #161, 162 Duodenum Brunner’s glands pancreas Muscularis mucosae crypts or i. glands Intestinal villus Lumen

  21. #29, 168 Jejunum or Ileum lumen Muscularis mucosae submucosa Crypts of Lieberkuhn

  22. #29, Intestinal glands (crypts) Mitotic cell ? ? ? Enteroendocrine cells Paneth cells

  23. #246UCSF Enteroendocrine cell Paneth cell

  24. #29, Myenteric (Auerbach’s) plexus Ganglion cells

  25. #176: Colon (Mucosa of the colon) m.m No villi, Straight glands, lots of goblet cells

  26. #176 – colon mucosa

  27. #177-1, 177-3, 177-2 Recto-anal junction Hemorrhoidal veins Muscularis mucosae Type of epithelium changes Muscularis mucosae frays Dilated veins

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