It covers things.
Epithelial tissue: commonly called Skin.
epethelial
Endothelial and epethelilal cells are the two different cell types which sandwich together the tissue. On the blood side is the endothelial cells (endo, meaning inside), and on the outer side are the epethelial cells. For example the epethelial cell layer are the cells that coat the intetestine wall, and thus absorb nutrients and the the endothelial cells are the cells that face the blood,and release those nutrients into the blood.
They have hair (cilia) which cleans your windpipe.
Epithelial tissues have very little intercellular matrix. They are composed of tightly packed cells that form continuous sheets, with minimal extracellular space between them. This allows epithelial tissues to function as barriers and provide protection to underlying tissues.
the least important function is the wall of the tissue it self!
it is important because the wrong tissue can kill you
They are important because they are part of your body
The common and the most important rule for the cells is that they are "the building blocks of body".They are as important to us as a brick is important to a house.Cells made up a tissue , tissue made up organs and organs together made up a human body.
Skin
It covers things.
A cough is when you get something tangled up with your Cilia (Ciliated Epethelial cells) and your Cilia just try to get rid of them by making you cough...