Basement membrane

Definition

The basement membrane is a thin, fibrous, extracellular matrix that separates epithelial and endothelial cells from their underlying connective tissue. It provides structural support and anchorage for the cells, as well as acting as a barrier to the movement of molecules.

Related terms

Epithelial Tissue: A type of tissue composed of one or more layers of cells that form the covering or lining of all internal and external body surfaces.

Extracellular Matrix: A complex network of proteins and carbohydrates surrounding cells within tissues, providing structural and biochemical support to surrounding cells.

Connective Tissue: Tissue that supports, binds together, and protects organs. It typically consists of relatively few cells embedded in an extracellular matrix