If every vain of the human body was laid out, how many times would it go round the world?

Question: If every vain of the human body was laid out, how many times would it go round the world?

Asked by issiphee1 to Iain, Jo, Leo on 24 Jun 2010 in Categories: General.
- Leo Garcia answered on 24 Jun 2010:
  
  Estimates differ – but if every part of the human circulatory system were laid end to end (for an average man), it would go around to world somewhere between 2 to 4 times!

Question: If every vain of the human body was laid out, how many times would it go round the world?