Identify microscopically:

1. Mucosa

2. Submucosa

3. M. externa

4. Serosa

Draw and annotate:

A line sketch of the stomach-duodenal junction.

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

Microscope

• Cross section through the stomach-duodenum junction
• Cross section through glandular and lymphocyte tissue
• Villi from the duodenum
• Mucous gland
• Crypts in the duodenum
• Oblique section of the duodenal surface
• Cross section through glandular and lymphocyte tissue
• Blood vessels in the submucosa
• Mucous gland
• Cross section through the stomach-duodenum junction