Skin is the outer covering of the body. Largest organ in the body, skin has many functions.
First of all, the skin acts as a shield against infections. The skin prevents certain micro organisms from entering the body. The Langerhans cells and Keratin layers acts as a barrier to outside invaders. The skin also protects he body from the Ultra Violet rays.
It is through the skin that we know cold, heat and pain. The skin helps to recognise the various sensations. Skin also helps in maintaining he body temperature. Well, the skin adjusts the body temperature in extreme weather conditions.
Skin also helps in disposing of the waste, including excess salt, which the body produces.
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