A proteoglycan and glycoprotein sheet secreted by cells to form the extracellular matrix. The basal lamina, also called the basement membrane, is a three-layer structure that influences cell polarity, differentiation, and migration.
the more superficial of two layers (along with the reticular lamina) making up the basement membrane. It is produced by the overlying epithelial tissue.
Thin mat of extracellular matrix that separates epithelial sheets, and many types of cells such as muscle cells or fat cells, from connective tissue. Sometimes called a basement membrane.