GENERAL HISTOLOGY

Detailed explanation-1: -The basal lamina constitutes a thin extracellular matrix, which is located between the connective tissue and the basolateral side of a cell layer. This cellular layer can consist of either endothelial or epithelial cells, and those cell types secrete the different molecular components of the basal lamina.

Detailed explanation-2: -The basal lamina consists of a mixture of collagens, laminin (glycoprotein), perlecan (heparan sulphate glycoprotein), entactin (glycoprotein). These proteins can bind to each other to make a highly crosslinked extracellular matrix as shown in this diagram.

Detailed explanation-3: -The epithelial basal membrane as a specialized extracellular matrix. The epithelial basal lamina is a specialized ECM securing the vocal fold epithelium to the underlying lamina propria. Its molecular components are secreted by the epithelial cells that rest on it.

Detailed explanation-4: -Figure 19-34. The connective tissue underlying an epithelium. This tissue contains a variety of cells and extracellular matrix components. The predominant cell type is the fibroblast, which secretes abundant extracellular matrix.