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.
1. tin-a silvery malleable metallic element that resists corrosion; used in many alloys and to coat other metals to prevent corrosion; obtained chiefly from cassiterite where it occurs as tin oxide. atomic number 50, Sn. tin foil, tinfoil-foil made of tin or an alloy of tin and lead.