LIFE SCIENCE

Detailed explanation-1: -The basal lamina, a mixture of glycoproteins and collagen, provides an attachment site for the epithelium, separating it from underlying connective tissue. The basal lamina attaches to a reticular lamina, which is secreted by the underlying connective tissue, forming a basement membrane that helps hold it all together.

Detailed explanation-2: -Opposite the free surface, the cells are attached to underlying connective tissue by a non-cellular basement membrane. This membrane is a mixture of carbohydrates and proteins secreted by the epithelial and connective tissue cells.

Detailed explanation-3: -Basic Structure of Epithelia Epithelia are polarized, with an apical surface that faces the external environment and a basal surface that faces the basement membrane.