Asymmetry or polarity is a characteristic of epithelial tissues. The importance of this trait has recently been discovered by observing that, When it disappears, Changes originate and different types of tumors are formed. Epithelial tissues are made up of one or more layers of cells joined Configuration Function Epithelia together. That cover all the free surfaces of the body. They line internal parts of the body, Such as cavities, Organs and tubular ducts, And also external parts, Such as the skin. Epithelia represent more than 60 percent of all cells in the human body; In many cases they form the parenchyma, Or functional part, Of numerous.
Epithelial tissue formation
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