Layers of the Gastrointestinal Tract: The GI tract consists of four layers: mucosa (innermost), submucosa, muscularis externa (smooth muscle), and serosa or adventitia (outer layer), each playing a role in digestion and motility. Layers of the Gastrointestinal Tract Diagram - Chart - diagrams and charts with labels. This diagram depicts Layers of the Gastrointestinal Tract and explains the details of Layers of the Gastrointestinal Tract.
Layers of the Gastrointestinal Tract