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1- Epithelial tissue covers surfaces with an uninterrupted layer of cells. 2- Epithelial cells are attached to one another. They are sheets of continuous cells that cover surfaces, line cavities of the body and are the major tissues of glands.

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4- Epithelial cells are polarized. 3- Intercellular spaces in epithelium are small. 5- Epithelial cells are separated from the underlying tissue by a basement membrane

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basement membrane surface of epithelium - One layer of cells. - The shape of cells is cube-shaped. - More than one layer of cells. - The shape of superficial cells is scale-like.

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Simple squamous epithelium Simple cuboidal epithelium Simple columnar epithelium Pseudostratified columnar epithelium Stratified squamous epithelium (non-keratinized) Stratified squamous epithelium (keratinized) Stratified cuboidal epithelium Stratified columnar epithelium Transitional epithelium (relaxed) Transitional epithelium (distended)

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