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HUMAN BODY -HAIR

WE  HAVE  HAIR  ALL   OVER  OUR  BODY, except  for our  palm  and   the  sole  of  our  feet .The  hair     on  our  head   are  the   thickest  .Hair   is made   up  of  Keratin    .Keratin  is  a  tough   and   horny  protein  .Hair  shafts  grow   from  hair  follicles  that  are   situated   on  the  skin 's  outer  layer,which  is   called   Epidermis.The  part  of  hair  that  is   under   the skin  is  called   a  root ,They   can  be  in   many  colors.Hairs   can   be  straight  ,wary,or  curly.When  it  is  cold ,a  little  muscle   pulls  the  hair  upright.Some   hairs  are  too  thin  to  be  seen.
FACTS
  • HAIR  IS  THE  FASTEST   GROWING   TISSUE  IN  THE  BODY,SECOND  ONLY  TO  BONE  MARROW.
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  • 35  meters  of  hair  fiber   is  produced   every  day  on  the average  adult   scalp.
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  • The   average  scalp  has  100,000  hairs.Redheads   have  the  least    at  80,000,brown  and  black   haired   person have  about 100,000,and  blondes  have  the  most   at  120,000. 

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