squamous epithelial cells

What are Squamous Epithelial Cells?

April 3, 2019

Before we discuss to you the nature of the squamous epithelial cells, let us get to know what are epithelial cells first.

Epithelial Cells

The epithelial cells are cells that you can find in various parts of our body. You can find these cells in your blood, urinary tract, organs, skin and many more. The epithelial cells can be of used to in determining an illness or a suspicion of an underlying medical condition. It is typically used in determining an illness in your urinary tract. Off the charts number of epithelial cells means there might be something wrong with the urinary tract.

Often times, off the charts, reading of epithelial cells might mean an infection. The epithelial cells are your protective barrier in your tissues. Whenever there is a foreign attack or invasion from an outside organism, the epithelial cells grow in number. This is why it has always been interpreted as an infection when epithelial cells increase in number.

The epithelial cells are quite important; they are in strategic places like the skin, urinary tract, digestive tract, organs and so on because these are the places most susceptible for bacterial infection and virus invasion.

Types of Epithelial Cells

There are three types of epithelial cells. These are the renal tubular, squamous, and transitional epithelial cells. The renal tubular epithelial cells are the epithelial cells that are commonly found in the urine. This kind of epithelial cells is what we usually see in the urinalysis sheet that is something to do with the kidney.

Raised amounts of tubular epithelial cells mean an infection or there must be something wrong with the kidney. The transitional epithelial cells are also called bladder cells which can be commonly found in older men. They can be located in the middle of the renal pelvis and urethra. The last but not the least, which is our article’s topic, is the squamous epithelial cells. The squamous epithelial cells are the largest epithelial cells in terms of cell size. They are located in the vagina and urethra.

Where Can We Find Them?

The squamous epithelial cells are cells that most commonly found in urine sediments. These cells are large cells that are flattened due to the big amount of cytoplasm, surrounding the central nucleus. They squamous epithelial cells can be found almost anywhere in your body. These cells can be found in your skin tissue, the lining in your throat, intestine tracts, the blood vessels, your organs and many more. They are the barrier or the guards of your skin from foreign invasions. They usually are the ones that are first attacked by a virus or bacteria before it seeps in deeper into the tissues.

Why is Squamous Epithelial Cells Important in Your body?

The squamous epithelial cell’s main job is to protect the inside of your body from being infected with microbes and other foreign organisms. The environment around us is pretty inhabitable. However, there are microbes around us not seen by the naked eye and has the superior capability to injure and cause trauma in our body.

The squamous epithelial cells are also squishable. This is the reason why you can freely stretch your skin. The squamous epithelial cells also allow sweat to happen to let your body cool down in situations where your body is in high temperature. That is why you sweat when the air around you is humid when you exercise or do any work that requires heat as a by-product.

The thin and large surface area features of the squamous epithelial cells make it an ideal candidate for surface areas that requires a thin and smooth surface and can be semi-permissible for fluid, blood, and air to pass through. With that, they are usually found in air sacs of the lungs, blood vessels, organs, and the skin.

The Squamous Epithelial Cells in the Blood Vessels

The squamous epithelial cells are the cells that line the lining of the insides of the blood vessels which includes the arteries, capillaries, and veins. It seems like they are strategically in there because of their characteristics. Blood vessels have blood in them that is always and in constant movement to supply nutrition and food to nearby cells.

The smoothness and thinness of the surface of the squamous epithelial cells let the blood to flow freely on the blood vessels. It reduces blockage, contraction and the friction of sediments and the linings of the blood vessels because of its squish and soft surface. This act regulates the flow of the blood and reduces the risk of having high blood pressure. The squamous epithelial cells have an important job too in being the bridge of the cells and the blood in their constant exchange of waste and nutrients.

The Squamous Epithelial Cells of the Lungs

The squamous epithelial cells have an important job too in the lungs. It is located in the lining of the lung air sacs. Now we do know, that the air sacs are the ones responsible for the exchange of healthy oxygen in the blood and the extraction of waste product (carbon dioxide) in the blood. All these wondrous works of air sacs cannot be completely done without the help of the squamous epithelial cells. The squamous epithelial cells are the cells that make it possible for this exchange to happen.

The Squamous Epithelial Cells in the Kidneys

The kidney is of the organ guys that help detoxify the body. It takes out the waste products and excess water and turns it into urine which you frequently eliminate every day of your life. The linings of the kidney are made up of squamous epithelial cells. These squamous epithelial cells make it possible for the absorption of waste and excess water to happen. With the permissible feature of the squamous epithelial cells, this crucial exchange would not happen at all.


Epithelial cells in urine: What does it mean?

Last reviewed Fri 23 March 2018 By Lana Burgess

Reviewed by Carissa Stephens, RN, CCRN, CPN

Retrieved last March 21, 2019