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HUMAN BODY-THE SKIN

THE  SKIN  IS  A  PROTECTIVE  LAYER  BETWEEN   THE  BODY   AND  ITS  EXTERNAL   ENVIRONMENT.It   works   as  a  sensor   to  monitor   changes  in  exterior   physical   conditions.
Different   kinds   of   situations  such  as   heat,cold,pain,and  pressure,provide  different  types  of  nerve  cells  ,in  the  skin .Thus  ,the  brain  is  sent  the   useful   information   of  the  happening  outside  the   body  ,and  it  in  turn  , command  an  action  to  different  parts  of   the  body.For  example  .when   happen  to  hold  a  flower  with  a  thorn  and  detect  pain  ,messages  from  the  arm   are  sent    to  the  spine .A spine  sends  this   message   to  brain   and  brain  commands   the  hand  muscles  to  throw  the  flower.All   this  happen   in  less  than  one  second .Thus  ,these  nerve   cells  prevent  our  body  from  damage  or  injury.Our  skin   feels  the  pressure  and pain ,  so  we  feel   when  our  finger  is   cut  by  knife.
FACTS-
  • THERE   ARE  MILLIONS  OF  MICROSCOPIC  NERVE  ENDINGS  UNDER  THE   SURFACE    THAT DETECT  LIGHT TOUCH,HEAVY   PRESSURE,HEAT,COLD  AND  PAIN.
  • OUR   SENSE  OF  TOUCH  IS  MORE  REFINED   THAN    ANY  DEVICE   EVER  CREATED.
  • HUMAN  SKIN
  • WHEN  WE  TOUCH  SOMETHING ,WE  SEND    A   MESSAGE TO  OUR  BRAIN  AT 124  mph. 
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