Epithelial Tissues

     Epithelial tissue is made up of cells that covers the whole body! It is made up of cells closely packed and ranged in one or more layers. This tissue is designed to form the covering or lining of all internal and external body surfaces. Epithelial tissue that occurs on surfaces on the interior of the body is known as endothelium. There are 6 types of epithelium: Squamous, simple cuboidal, simple columnar, ciliated columnar, glandular, and stratified epithelium. Epithelial tissue actually has a lot more functions than you would imagine. These functions being: protection, sensation, secretion, absorption, excretion, diffuses, cleaning, and it reduces friction. So as you can see, these tissues can serve a lot of purposes great for living organisms. The picture below was added into this blog so you can visually see the different types of epithelial tissues.

The picture above is a simple squamous tissue. The reason for having this kind of tissue for filtration and diffusion.

Next, we have simple cuboidal tissues. The group members are trying to look like a cube as much as possible. The purpose the cuboidal tissue serves is for excretion and absorption.

This is a simple columnar tissue. As you can see in the image, the group members are standing straight up and trying to represent columns. Columnar tissue is most likely found in anything that has to do with digestion in the human body. It's purpose is absorption.

 

Above is a transitional tissue. You can see the diagram really does represent the name. The "cell" is transitioning between two different flows. I have done research and asked other classmates for help; the best way I can describe this cell is it swells up and plays a role in the urinary tract.

This is a pseudostratified columnar tissue! Even this little guy's name sounds killer! Actually What is does is travel through airways and respiratory systems. Its main purpose is to remove dust and particles from the airways. Therefore, making it easier for you to breathe!

This is a stratified columnar tissue. It is used for protection and secretion in the body. Therefore, it is most likely found in the male urethra, but can also be found in the male or female urinary tract.