Answer:
Appendix, in anatomy, a vestigial hollow tube that is closed at one end and is attached at the other end to the cecum, a pouchlike beginning of the large intestine into which the small intestine empties its contents. It is not clear whether the appendix serves any useful purpose in humans.
The answer is anatomy.
They are probably Stem cells. which won't regenerate.
Dolines. I just looked it up on Quizlet. If you need answers, make an account on Quizlet and get the answers on their flash cards.