Oesophagus

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Oesophagus

  1. 1. General Plan of GIT IC OL A (1) M : Mucosa: Epithelium Lamina Propria Muscularis Mucosa (3) MUSCULOSA IC: Inner circular OL: Outer longitudinal (4) A: Adventitia/ Serosa M S (2) S: Submucosa
  2. 2. E E : Non-Keratininzed Stratified Squamous Epithelium on a clear wavy BM.
  3. 3. G D Oesophagus Dog G: Oesophageal glands in submucosa: *Mucous Glands *Compound tubulo-alveolar *D: Ducts pierce mucosa to open into lumen G D
  4. 4. Oesophagus Cat Well-developed Muscularis Mucosa No Glands in submucosa
  5. 5. Digestive Tract Histology Department / Faculty of Medicine / Cairo University
  6. 6. Digestive Tract Histology Department / Faculty of Medicine / Cairo University
  7. 7. Auerbach´s Plexus between the inner circular ( C) and outer longitudinal (L) muscle layers Arrows:
  8. 8. Gastro-oesophageal junction Oesophageal glands Inner oblique submucosa Gastric glands non ker. St . sq.epith.
  9. 9. Gastro- Oesophageal Junction
  10. 10. <ul><li>Data Show Trial Exam for Oesophagus </li></ul>
  11. 11. <ul><li>Identify the organ. </li></ul><ul><li>2) Mention the type of epithelium (E). </li></ul><ul><li>3) Black arrow </li></ul><ul><li>Blue arrow </li></ul><ul><li>Green arrow. </li></ul><ul><li>Astreix. </li></ul><ul><li>Arrow head . </li></ul><ul><li>Square. </li></ul>E ▲ ■ 1 *
  12. 12. 1) Identify the structures Indicated by the arrow. Be specific for the type. 2) In which layer are they present? 2
  13. 13. E * Identify (E), Arrows: Black, Blue & Green. Identify astreix. 3
  14. 14. Is this slide oesophagus cat or dog? Mention the criteria for differentiation. 4
  15. 15. 1 2 <ul><li>Identify the type of junction. </li></ul><ul><li>2) Which side is 1 and which is 2 ? </li></ul><ul><li>3) Identify: </li></ul><ul><li>Arrows : Black, red & green. </li></ul><ul><li>4) Identify layer marked by astreix. </li></ul>* 5

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