How do I Build a LEGO Digestive System? How might I build a LEGO model of a digestive system? I think it could be a good way of helping my son with a science project.

Either building plans, instructions, or any help with getting started would be appreciated.
I would keep it very simple with just building the organs with regular bricks. Color code each organ. I have never seen anyone do this with LEGO bricks so can't link to a picture, however I can imagine than it could be done easily. Basically you would end up with a pipe-system. ;)