Intestinal Mucosal Membrane

The intestinal mucosal membrane, also known as the intestinal mucosa, is a layer of specialized cells and tissues that line the inner surface of the small and large intestines. It plays an important role in nutrient absorption, digestion, and immune defense. The intestinal mucosa is made up of several layers of cells, including the epithelial cells that form the innermost layer. These cells have finger-like projections called villi and microvilli, which increase the surface area available for absorption of nutrients. Beneath the epithelial layer is the lamina propria, a layer of connective tissue that contains immune cells and blood vessels. The third layer, the muscularis mucosae, is a thin layer of muscle that helps to move food and nutrients through the digestive tract.