Translations:Gastrointestinal tract/16/en

Histology

Main article: Gastrointestinal wall

General structure of the gut wall

• 1: Mucosa: Epithelium
• 2: Mucosa: Lamina propria
• 3: Mucosa: Muscularis mucosae
• 4: Lumen
• 5: Lymphatic tissue
• 6: Duct of gland outside tract
• 7: Gland in mucosa
• 8: Submucosa
• 9: Glands in submucosa
• 10: Meissner's submucosal plexus
• 11: Vein
• 12: Muscularis: Circular muscle
• 13: Muscularis: Longitudinal muscle
• 14: Serosa: Areolar connective tissue
• 15: Serosa: Epithelium
• 16: Auerbach's myenteric plexus
• 17: Nerve
• 18: Artery
• 19: Mesentery

The gastrointestinal tract has a form of general histology with some differences that reflect the specialization in functional anatomy. The GI tract can be divided into four concentric layers in the following order:

• Mucosa
• Submucosa
• Muscular layer
• Adventitia or serosa