Identify microscopically:

1. Mucosa

2. Submucosa

3. M. externa

4. Adventitia

Draw and annotate:

A line diagram of the oesophagus-stomach junction.

1. How do the different layers of the oesophagus change in the stomach?

Microscope

• Cross section through the oesophagus-stomach junction
• Mucosal surface of the stomach
• Mucosa of the oesophagus
• Mucosa of the oesophagus
• Glandular tissue in the oesophagus
• Epithelial surface of the stomach
• Artery in the submucosa
• Vein in the submucosa