DNIS stands for. 1  32. similar. DNIS. 2  3. DNIS. Dialled Number Identification Service. 3  3. DNIS. Dialed Number Information Service. 4  3. DNIS. Dialed Number Identification System. 5  3. DNIS. Dialed Number Identification Services. 6  3. DNIS. Dial Number Identification Service. 7  2. DNIS. Direct Number Identification Service. 8  2. DNIS.
Locate a large fingerlike projection at the surface of the organ (this is an intestinal villus ). Observe that the projection has an internal component and a surface. The surface of each villus is covered with simple columnar epithelium .
Simple columnar epithelium consists of a single layer of tall (columnar cells). Simple columnar epithelium is usually involved in active secretion and/or absorption of material across the single cell layer, or (if ciliated) in movement along the surface. By convention, a stratified epithelium is described according to the shape of cells on its free surface. 2  Regardless of whether the surface cells are squamous, cuboidal, or columnar, the underlying cells are usually cuboidal.