Lacking blood vessels; characteristic of epithelial tissue.

A layer of carbohydrates and proteins to which the deepest or most superficial epithelial cells are attached.

• Lines respiratory tract; parts of the reproductive tract
• Function: protection; secretion; movement of mucus and sex cells

Epithelium consisting of one or more cell layers, the most superficial of which is composed of elongated and somewhat cylindrical cells projecting toward the surface.

Epithelial tissue consisting of one or more cell layers, the most superficial of which is composed of cells of equal height and width.

• membranous tissue covering internal organs and other internal surfaces of the body.

     3 membranous layers which line the posterior body cavity (brain and spinal cord)

Epithelial tissue, often ciliated and columnar, in which all of the cells rest upon the basement membrane.  However, not all cells touch the free surface.  The nuclei appear staggered.

• Lines gastro-intestinal tract; the ducts of many glands
• Function: secretion; absorption

• Function:  Secretion; absorption
• Lines Kidney tubules; ducts of many glands; surface of ovaries

• Location:  line air sacs of lungs; blood vessels; heart
• Thin flat cells, tightly joined
• Filtration; diffusion; osmosis

epithelium consisting of one or more layers of scalelike cells.

Epithelium made up of a series of layers, the cells of each varying in size and shape.

• Location:  Lining of esophagus; mouth; vagina; epidermis
• Function: protection from abrasion & desication in keratinized form.
• keratinized or non-keratinized
• multiple layers of scale-like cells

• epithelial cells that may be flattened or cuboidal; found in the urinary bladder and in the first expansion of the ureters as they leave the kidneys
• these cells have the capacity to stretch and flatten so the calyx and bladder can expand.

Outer/Inner area that the most superficial or deepest cells in epithelial tissue are exposed to.

Epithelium made up of one layer of cells.