 The term "pseudostratified" is derived from the appearance of this epithelium in section which conveys the erroneous ("pseudo" means almost or approaching) impression that there is more than one layer of cells, when in fact this is a true simple epithelium since all the cells rest on the basement membrane.The nuclei of these cells, however, are disposed at different levels, thus creating the illusion of cellular stratification.Not all ciliated cells extend to the luminal surface; such cells are capable of cell division providing replacements for cells lost or damaged.