Cells have polarity - apical (upper, free) and basal (lower, attached) surfaces. Apical surfaces may bear microvilli (e.g., small intestine) or cilia (e.g., respiratory epithelium).
Noncellular basal lamina of glycoprotein and collagen lies adjacent to basal surface.
Are composed of closely packed cells. They continuous sheets held together by tight junctions and desmosomes.
Supported by a connective tissue reticular lamina under the basal lamina.
Avascular but innervated
High rate of regeneration
Characteristics of Epithelial Tissue