About skin

... is the largest organ in the human body The skin

  • comprising up to 20% of total body weight
  • offers protection against mechanical injuries
  • protects from chemical irritants and physical irritants (heat, cold,light)
  • is a barrier to the invasion of bacteria, fungi, viruses and other agents
  • regulates body heat
  • facilitates perception of stimuli such as pain, pressure, itch, heat and cold
  • performs metabolic functions
  • keratin is the key structure material making up the outer layer of human skin
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