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.
Copper (CU) is a mineral which can easily be taken in excess, although it is essential for normal functioning. The average adult has 60 - 110 mg of copper in the body. The liver controls copper storage and any excess is excreted via the bile, though if your copper intake increases so does the amount that you store.