Esophagus

Esophagus

Histology of Esophagus
Answer:

• Oesophagus is a tube
• Histology of esophagus It has four layers

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1. 1. Mucosa
      • It shows several longitudinal folds that disappear when the tube is distended It is lined by stratified Squamous epithelium
      • Finger like processes project from connective tissue into the epithelium
      • This prevents separation of epithelium
      • Lamina propria contains some mucous glands
      • The muscularis mucosae is absent or poorly developed
   2. Submucosa
      • It contains compound tubuloalveolar mucous glands
      • These glands are present at the level of bifurcation of the trachea
   3. Muscle layer
      • It consists of usual circular & longitudinal layers
   4. External adventitia
      • It is dense fibrous tissue surrounding the muscle layer

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