Squamous epithelium | Cuboidal epithelium | Columnar epithelium |
This kind of epithelium is found in walls of blood vessels, air sacs of lungs etc. | This kind of epithelium is found in in ducts of glands and tubular parts of kidney nephrons etc | This kind of epithelium is found in the lining of stomach and intestine. |
It is made of single thin layer of flattened cells with irregular boundaries. | It is made of single layer of cube like cells. | It is made of single layer of tall and slender, column like cells with nuclei aligned at base. They may have microvilli. |