U.S. Postal Inspectors are law enforcement agents, much like police officers and detectives, who maintain the integrity of the U.S. postal system. To become a postal inspector you must be able to fulfill certain duties and meet specific requirements.
epithelial cell, any one of several cells arranged in one or more layers that form part of a covering or lining of a body surface.The cells usually adhere to one other along their edges and surfaces. One surface is free, and the other rests on a noncellular basement membrane.See also epithelial tissue.ny of the cells forming the cellular sheets that cover surfaces, both inside and outside the body. Epithelial cells are closely packed and take on polyhedral shapes, from tall (columnar) through squat (cuboidal) to flat (squamous).
HOW EPITHELIAL TISSUES ARE CLASSIFIED: Epithelia are classified on the basis of cell shape and arrangement. The cell shapes are columnar (column shaped cells), cuboidal (cube shaped cells), and squamous (scale-like cells).Generally, the arrangements are simple and stratified.Simple epithelia have one layer of cells attached to a basement membrane.he cell shapes are columnar (column shaped cells), cuboidal (cube shaped cells), and squamous (scale-like cells). Generally, the arrangements are simple and stratified. Simple epithelia have one layer of cells attached to a basement membrane.