GENERAL HISTOLOGY

Detailed explanation-1: -Mucosa (mucous membrane)-it is the innermost layer lining the lumen of the alimentary canal. Since it secretes mucus to lubricate the inner lining of the gut it is called mucosa . This layer forms irregular folds (rugae) in the stomach.

Detailed explanation-2: -So, the innermost membrane of the digestive tract is mucosa membrane.

Detailed explanation-3: -The mucosa is made up of three layers: The epithelium is the innermost layer and it is responsible for most digestive, absorptive, and secretory processes. The lamina propria is a layer of connective tissue that is unusually cellular compared to most connective tissue.

Detailed explanation-4: -Mucosa is the soft tissue that lines the body’s canals and organs in the digestive, respiratory and reproductive systems. It’s also called the mucous membrane. Mucosa has three layers: epithelium, lamina propria and muscularis mucosae. It plays an important part in immunity.

Detailed explanation-5: -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).