The skin functions like a porous plastic bag that keeps all the vital fluids in and waste products like excess salts and sweat out. It also acts as the blood cooling system for it has many blood vessels and capillaries running through it that when you exert yourself and sweat starts flowing the cooling effect of evaporation also cools the blood returning it to the heart and lungs. It also acts as out first line of defense against many nasty stuff that without protection we�d be dead in a few days. Burned skin allows fluids to come out of the skin that is damaged that is why burns weep. These fluids are vital for our survival and if we loose too much we simply die.

Posted: January 1st, 2008 under Facts, Functions.
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