<P> By layer , epithelium is classed as either simple epithelium , only one cell thick ( unilayered ) or stratified epithelium as stratified squamous epithelium , stratified cuboidal epithelium , and stratified columnar epithelium that are two or more cells thick ( multi-layered ) , and both types of layering can be made up of any of the cell shapes . However , when taller simple columnar epithelial cells are viewed in cross section showing several nuclei appearing at different heights , they can be confused with stratified epithelia . This kind of epithelium is therefore described as pseudostratified columnar epithelium . </P>
the type of epithelial tissue that is two or more cell layers thick is called
stratified columnar epithelium stratified cuboidal epithelium stratified squamous epithelium