the.com/epithelium
The body's cling film: thin, seamless, and standing between you and the world.
means The thin sheet of tightly packed cells that lines surfaces and cavities throughout the body — skin, gut, lungs, blood vessels — forming a protective, selective barrier.
from Coined from Greek epi- ('upon') plus thele ('nipple, teat'), because the term was first applied to the delicate membrane covering the nipple and areola before anatomists broadened it to cover any thin lining tissue on the body's surfaces and cavities.
- coverage job
- lines every surface, inside and out, you have
- renewal rate
- gut lining replaces itself every few days
- zero blood supply
- fed by diffusion, not its own vessels
- cancer origin
- most cancers start here, called carcinomas