Left overs..

[Darwinian]

Only that it must have been somehow beneficial during mankinds development but these days it seems to have no purpose.

If it did, none of use blokey types would bother shaving.

[allan175]

The obvious one to me - appendix.
Fetuses have gills??

According to QI (a "Quite Interesting" programme here in the UK with Stephen Fry) the appendix does actually serve a purpose!

[leo-rcc]

Loren G. Martin, a professor of physiology at Oklahoma State University, argues that the Vermiform appendix has a function in fetuses and adults. Endocrine cells have been found in the appendix of 11 week old fetuses that contribute to "biological control (homeostatic) mechanisms." In adults, Martin argues that the appendix acts as a lymphatic organ. The appendix is experimentally verified as being rich in infection-fighting lymphoid cells, suggesting that it might play a role in the immune system.

A. Zahid from the Department of Anatomy of Allama Iqbal Medical College in Lahore, suggests that it plays a role in both manufacturing hormones in fetal development as well as functioning to 'train' the immune system, exposing the body to antigens in order that it can produce antibodies. He notes that doctors in the last decade have stopped removing the appendix during other surgical procedures as a routine precaution, because it can be successfully transplanted into the urinary tract to rebuild a sphincter muscle and reconstruct a functional bladder.

Source: wikipedia and pubmed.

[Edwardo Piet]

The obvious one to me - appendix.
Fetuses have gills??

According to QI (a "Quite Interesting" programme here in the UK with Stephen Fry) the appendix does actually serve a purpose!

QI is one of the best programs ever.
Certainly the best quiz show ever IMO. Its very funny and you actually learn interesting, (or rather quite interesting) things.
And of course Stephen Fry is a genius.

[leo-rcc]

Stephen Fry is a genius, well educated, and Bipolar disorder patient. Odd that a lot of BD patients have such creative minds.