A person is able to survive without a significant portion of internal organs Naturally, the quality of life deteriorates, but the ability to function remains. We can live without our spleen, gallbladder, thyroid gland, appendix, tonsils, reproductive organs, part of our liver, intestines, stomach, one lung and one kidney. There are a lot of nuances to these "can live" things, but the very possibility and flexibility of our body - it doesn't cancel it out.