GENERAL HISTOLOGY

Detailed explanation-1: -Basement membranes are a dense, sheet-like form of extracellular matrix (ECM) that underlie epithelia and endothelia, and surround muscle, fat and Schwann cells. Basement membranes separate tissues and protect them from mechanical stress.

Detailed explanation-2: -The specialized form of thin extracellular layer which anchors epithelial cells to underlying connective tissue is called basement membrane. The basal surface of the epithelial cell faces the basement membrane while its apical surface faces the outside environment or the lumen.