OESOPHAGUS

Histology of Oesophagus

• Mucosa – stratified squamous epithelium nonkeratinized, lamina propria interdigitating with the basal border of the epithelium, muscularis mucosae.
• Submucosa – mucus secreting oesophageal glands.
• Muscularis externa – composed of skeletal muscle, a mixture of skeletal and smooth muscle in the middle third, smooth muscle in the lower third.
• Adventitia – outer covering most of its length with the lower end with serosa.
• Mucus secreting oesophageal glands are seen in the lamina propria near the cardio-oesophageal junction.