What's the most number of organs/body parts a human being can lose and still survive? I'm guessing that a person can survive with no limbs, no gall bladder, no spleen and only one lung and kidney, but is there anything else? I don't know why I need to know this...
I'm assuming we're talking surviving without the need for a machine to do any of the work? Otherwise you could loose pretty much everything except the brain and you'd still work (just).
Another to add to the list is the famous appendix.
Other considerations however include things like removal of the spleen meaning you're more likely to go down with colds and such.
you wouldn't survive for too long without a spleen unless you had medications as well. You could lose a decent chunk of your gut and you'd live, and actually you could keep going on about half a kidney.