Types of epithelium
1- Simple Squamous epithelium *simple squamous epithelium is a single layer of flat scale-shaped cells. Both the endothelial lining of blood vessels and the mesothelial lining of the body cavities are simple squamous epithelium.* 2- Simple Cuboidal epithelium *Simple cuboidal epithelium is a type of epithelium that consists of a single layer of cuboidal (cube-like) cells which have large, spherical and central nuclei.* 3- Simple columnar Epithelium *Simple columnar epithelium consist of a single layer of cells that are taller than they are wide. This type of epithelia lines the small intestine where it absorbs nutrients from the lumen of the intestine. Simple columnar epithelia are also located in the stomach where it secretes acid, digestive enzymes and mucous.* 4-Stratified squamous epithelium *A stratified squamous epithelium consists of squamous (flattened) epithelial cells arranged in layers upon a basal membrane. Only one layer is in contact with the basement membrane; the other layers adhere to one another to maintain structural integrity.* 5- Stratified Cuboidal Epithelium *Stratified cuboidal epithelia is a rare type of epithelial tissue composed of cuboidally shaped cells arranged in multiple layers. They protect areas such as ducts of sweat glands, mammary glands, and salivary glands.* 6- Stratified columnar epithelium *Stratified columnar epithelium is a rare type of epithelial tissue composed of column-shaped cells arranged in multiple layers. It is found in the conjunctiva, pharynx, anus, and male urethra. It also occurs in embryo.*