Final answer:
Epithelial tissue rests on a basement membrane that separates it from the underlying connective tissue. Epithelial membranes can be mucous, serous, or cutaneous, such as the skin, and have functions that include protection, secretion, and absorption.
Step-by-step explanation:
All epithelial tissue rests upon a basement membrane, which is composed of connective tissue. This basement membrane provides an attachment site for the epithelium, separating it from the underlying connective tissue, and also attaches to a reticular lamina secreted by the underlying connective tissue, serving to hold it all together.
Epithelial membranes, including the cutaneous membrane (skin), are complex structures composed of epithelial tissue coupled with a connective tissue layer. For instance, the skin, which is an example of one such membrane, is a stratified squamous epithelial layer that provides protection from the environment.
Different types of epithelial membranes include mucous membranes, serous membranes, and cutaneous membranes. Mucous membranes line various body cavities and tracts, such as the digestive and respiratory systems, and are covered in mucus that is produced by epithelial exocrine glands.