what is the most sensitive part of you body excluding your organs

Question: what is the most sensitive part of you body excluding your organs
- Keywords:
  anatomy,
  body,
  organ,
  sensitive,
  skin
Asked by leeromecarlisleunited to Helen, Jenni, Mark, Martin, Stu on 20 Jun 2011.
- Mark Burnley answered on 20 Jun 2011:
  
  It depends what you mean by sensitive. Sensitive to what? Taste, touch, sound, light, heat? I’ll take a punt and say the hypothalamus is the most sensitive part of the body, as it monitors so many things:
  
  http://en.wikipedia.org/wiki/Hypothalamus#Nuclei

Question: what is the most sensitive part of you body excluding your organs