A single layer of tall, thin cells. These large cells contain organelles that enable them to perform complex functions. In the intestines, it produces and secretes mucus and digestive enzymes. These often have cilia and microvilli on the surface. nonciliated simple columnar epithelium single layer of nonciliated column-like cells with nuclei near base of cells; contains goblet cells and cells with microvilli in some locations; function in secretion and absorption
Definition of copper. 1  any of various small butterflies of the family Lycaenidae having copper colored wings. 2  a reddish brown the color of polished copper. 3  uncomplimentary terms for a policeman.  a copper penny.
What is Copper? Copper is an abundant trace element that occurs naturally in the Earthâs crust and surface waters. Copper can be found as a pure metal in nature and has a high thermal and electrical conductivity. Copper compounds are generally found as copper (II) salts. How does Copper Enter Surface Water? Copper is commonly found in aquatic systems as a result of both natural and anthropogenic sources.