Enlarged appendix measures 15" x 6.5" x 4" -- if yours was this big, you'd be in the emergency room. Comes complete with a book/hangtag chock full of info about this vestigial organ. Some think the appendix, located at the bottom right of the intestine, doesn't do anything. Others think it helps good bacteria populate the gut. Most of us don't think about the appendix at all until it needs to get removed. Then we miss it terribly.