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 .
1 Epithelial cells have a free surface which is exposed to a body cavity, lining of an internal organ, or the exterior of the body, and a basal surface which is attached to the basement membrane. 2  Epithelia are avascular, which means without vessel.