Question: what are the names for the 4 layers of the intestinal wall?
Answer: MUCOSAL WALL ARCHITECTURE All segments of the GI tract are divided into four layers: the mucosa (epithelium, lamina propria, and muscular mucosae), the submucosa, the muscularis propria (inner circular muscle layer, intermuscular space, and outer longitudinal muscle layer), and the serosa (Figure 1).