What is stratified epithelium?

Stratified epithelium is a type of tissue found in the human body. Epithelial tissue is a lining of cells that cover most of the body surfaces and cavities, with an attached membrane called the basement membrane. Stratified epithelium means that this lining is more than one layer of cells thick. Simple epithelium consists of one layer of cells. Both types of epithelium can serve many purposes in different areas of the body, such as protection against injuries or pathogens, sensing of various stimuli such as taste, secretion of hormones or enzymes and nutrient absorption, with one common type of epithel. The shape of the cells in the upper layer of a stratified spinocellular epithelium is thin and flat, with irregular, curved, wavy edges - cells in the layers below them can be shaped the same or other than cells at the top. Squamalus is the most widespread type of stratified epithelium in the human body. It creates a lining of the mouth, vagina, rectum and several other holes in the body, as well as lining of vocal cords and cornea. The skin is alsoIt consists of a stratified spinocellular epithelium.

Another type of stratified epithelium is stratified block epithelium. The walnut cells have a shape similar to the shape of the cube. The stratified block epithelium is not as common as a spinocellular type, but can be found in several areas of the body, especially in the pipes of different glands, such as sweat and mammary glands and pipes of salivary glands found in the tongue.

Stratified column epithelium has cells in the shape of a rectangular prism, with a height noticeably longer than its width. This type is not very widespread, but is found in several areas, such as very large dairy channels and canals large salivary glands on the bottum of the mouth under the tongue. The column type of stratified epithelium can also be found in some parts of the respiratory and urinary tract and on the tubes of the testicles.

Sometimes a column epithelium may seem to be stratified if not, because of nuclei that appear at different heights, and the cells themselves are different lengths. These factors give the appearance of layers, but in fact there is only one layer with all cells that touch the basement membranes. This diversity of epithelium is called psuedostratified and is found in several body systems, including respiratory and reproductive.