Question

what is the use of epithelial tissue

Answer 1

Functions of epithelial cells include secretion, selective absorption, protection, transcellular transport, and sensing.
Epithelial layers contain no blood vessels, so they must receive nourishment via diffusion of substances from the underlying connective tissue, through the basement membrane.

Answer 2

Epithelial tissue is a protective tissue and is found around the whole body one simple example is our skin for epithelial tissue which is used to prevent outflow of internal body substances

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