The appendix is not a useless organ

Why Your Appendix Actually Matters

Why Your Appendix Actually Matters Watch this video on YouTube. The appendix has evolved in different animal species at least 29 times, according to this SciShow video, which means it…

The appendix has evolved in different animal species at least 29 times, according to this SciShow video, which means it probably serves a function. Scientists who studied appendixes in animals have come to the conclusion that it is a part of the immune system. In humans, the appendix is full of immune cells, including T cells, B cells, and natural killer cells, and good gut bacteria.