Skin is the longest part in our body
it covers the inner parts from harmful substances .
skin also acts as an excretory organ. 
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Skin is the largest sense organ in our body. It is having a lot of receptors on it for feeling hot,cold,pain and pressure. These receptors help skin in maintaining the function of skin.
Skin is having glands producing sweat and sebum. Sebum is an oily liquid formed on skin to avoid water to stick on skin. It helps in keeping water from skin.Skin helps to excrete waste in the form of sweat. The hair particles seen on skin protects it from cold.
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