What other vestigial organs do humans have and what were their original functions?

I'm just gonna give two.

Jacobson's organ-Jacobson?s organ is a fascinating part of animal anatomy and it tells us a lot about our own sexual history. The organ is in the nose and it is a special ?smell? organ which detects pheromones (the chemical that triggers sexual desire, alarm, or information about food trails). It is this organ that allows some animals to track others for sex and to know of potential dangers. Humans are born with the Jacobson?s organ, but in early development its abilities dwindle to a point that it is useless. Once upon a time, humans would have used this organ to locate mates when communication was not possible.


Appendix-The appendix has no known use in modern humans and is often removed when it becomes infected. While its original use is still speculated on, most scientists agree with Darwin?s suggestion that it once helped to process the cellulose found in the leaf-rich diet that we once had. Over the course of evolution, as our diet has changed, the appendix became less useful. What is particularly interesting is that many evolutionary theorists believe that natural selection (while removing all of the abilities of the appendix) selects larger appendices because they are less likely to become inflamed and diseased.

other besides what?

There is the appendix, which was originally used to aid in the digestion of raw meat.

The tailbone, which was the attachment point for a tail.

Male nipples - this applies to all placental mammals, not just humans.  Nipples begin to develop on mammal embryos before sexual dimorphism begins, and are therefore present in an undeveloped form even thought they are unnecessary on males.

Wisdom teeth can be considered vestigial, as we no longer actually need them but we apparently once did.

We also have vestigial behaviors, such as goosebumps.