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Gastrointestinal tract. Fine structure of the hollow and parenchymal viscera

Gastrointestinal tract. Fine structure of the hollow and parenchymal viscera. Dr. Altdorfer. Splanchnology - the study of the visceral organs : digestive, r espiratory , u r ogenital systems. Parenchymal organs. Tubular (hollow) organs. Parenchymal organs. C.t. capsule

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Gastrointestinal tract. Fine structure of the hollow and parenchymal viscera

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  1. Gastrointestinal tract. Fine structure of the hollow and parenchymal viscera Dr. Altdorfer

  2. Splanchnology - the study of the visceral organs: • digestive, • respiratory, • urogenital systems.

  3. Parenchymal organs Tubular (hollow) organs

  4. Parenchymalorgans C.t. capsule • Stroma / interstitium: c. t. network (reticular cells) • Parenchyme: e.g. glandular epithelium thymus lobule Liver (Azan) Interlobular septum lobule

  5. Reticular cells Reticular fibres – AgNO3 impr.

  6. Tubularorgans, e.g.:esophagus

  7. Tubular organs – typical wall structure 1.Tunica mucosa

  8. Tubular organs – wall structure 1.Tunica mucosa 2. Tela submucosa

  9. Tubular organs – wall structure 1.Tunica mucosa 2. Tela submucosa 3. Tunica muscularis Stratumcirculare Stratumlongitudinale

  10. Tubular organs – wall structure 1.Tunica mucosa 2. Tela submucosa 3. Tunica muscularis Stratumcirculare Stratumlongitudinale 4. Tela subserosa 5. Tunica serosa (mesothelium) or 4. Tunica adventitia

  11. Tubular organs – wall structure 1.Tunica mucosa Epitheliummucosae Laminapropriamucosae Lamina muscularis mucosae (onlyin GI tract!) 2. Tela submucosa 3. Tunica muscularis Stratumcirculare Stratumlongitudinale 4. Tela subserosa 5. Tunica serosa (mesothelium) or 4. Tunica adventitia

  12. a) Epithelium mucosae Str. basale (germinativum) Str. spinosum (polygonale) Str. superficiale (planocellulare) b) Lamina propria mucosae (Schaffer-glands) c) Lamina muscularismucosae(onlyin GI tract) a) Oesophagus1. Tunicamucosa b) c)

  13. Esophagus-cardia junction

  14. 1. Tunicamucosa

  15. 1. 3. Lamina propria mucosae 2. 2. 1. 1. • Lymphocyte • Plasma cells • Fibroblast, fibrocyte • Smooth muscle cells 4.

  16. a) Epithelium mucosae Str. basale (germinativum) Str. spinosum (polygonale) Str. superficiale (planocellulare) b) Lamina propria mucosae (Schaffer-glands) c) Lamina muscularis mucosae a) esophagus1. Tunicamucosa b) c) 2. Tela submucosa (oesophagealglands) Submucous plexus of Meissner

  17. Submucous plexus of Meissner

  18. Stratum circulare • Stratum longitudinale 1/3 1/3 1/3 esophagus – 3. Tunicamuscularis Myenteric plexus of Auerbach

  19. str. circulare str. longitudinale Tunicamuscularis Myenteric plexus of Auerbach

  20. Tela subserosa, Tunica serosa (or: Adventitia )

  21. Dr. Puskár Röhlich Pál: Szövettan, Budapest, 2006 Anthony L. Mescher: Junqueira’s Basic Histology, New York, 2010 Michael Ross and Lynn J. Romrell: Histology, Baltimore, 1989

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