State whether the following statement is true or false:
All epithelium is usually not separated from the underlying tissue by an extracellular fibrous basement membrane.

(FALSE) The statement is False.
In biological tissues,all epithelial cells are characteristically separated from the underlying connective tissue by a thin,non-cellular,extracellular fibrous structure known as the basement membrane. This membrane provides structural support and acts as a selective filter for substances moving between the epithelium and the underlying tissue.