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EPITHELIAL TISSUE
A covering tissue which protects both the outer surface of the body, as well as the internal organs.
Includes epithelia (layers of cells the cover internal and external surfaces) and glands
CHARACTERISTICS OF EPITHELIA
Cells are packed tightly together
One surface is exposed
Attached to the basement membrane
Absence of blood vessels
Continual replacement and regeneration
FUNCTIONS OF EPITHELIA
Physical protection
Control permeability
Provide sensation
Produce specialized secretions (endocrine and exocrine)
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