Good grief, as I re-read my post about not talking about placentas, I sound downright cranky! Not my intent. Sorry I gave you some bad moments there, fishdr. Some things that sound funny in my head do not translate well to the page.
Nanci, that is a good question. And, regarding placentas, of whom is it, really? The mom? The baby? The union of sperm and egg produce both baby and placenta, so it can't really be said to be of the mom alone. Makes me think of some animals who very neatly clean up the scene after the babies are born.