Would you be enticed by an advertisement for a coat that is waterproof, stretchable, and washable; that invisibly repairs small cuts, rips, and burns; and that is guaranteed to last a lifetime with reasonable care?Sounds too good to be true, but you already have such a coat-your cutaneous mem-brane, or skin.Skin is absolutely essential because it maintains your bodys boundary.(This is why you can swim for hours without becoming waterlogged.)
Structurally, the skin is a marvel.