What "artificial life support" is Terri on, other than a food tube? I am scared I know what the answer is.
That would be air. Her lungs artificially exchange CO2 and oxygen as they breathe in air for her. If her lungs were removed she would simply die on her own, so they must be artificial life support. (Hey, that means George "I-Am-God" Greer is on artificial life support. Somebody hand me one of those Demand-to-Kill-the-Useless-Eaters forms!)