Why do we have ridges on the roof of our mouths?

Question: Why do we have ridges on the roof of our mouths?
- Keywords:
  human body,
  mouth,
  musculoskeletal
Asked by lukescience64 to Rob on 19 Mar 2012.
- Robert Thompson answered on 19 Mar 2012:
  
  Hopefully someone with a bit more biology experience can answer you that. If not I think you might need to go google that one. Sorry

Question: Why do we have ridges on the roof of our mouths?