Hmm, I'd want to know that my carcass was treated with more dignity and respect by the medical community than my living body has, on occasions, received. If bits and pieces are useful I don't mind donating them, but I guess that will all depend on what eventually kills me. I'm not so keen on the idea of being used for practice. Yes, I know, students have to learn and I'll have departed the vessel so will be oblivious, but I think I've already gained my guinea pig badge.