Proof of evolution...what organ is no longer used in the human body?

Question

As proof that evolution occurs...What did that organ used to do before evolution did occur?

Sepolavi gets it, give it up people...half answers not accepted.

Answer 1

Vermiform appendix

There have been cases of people who have been found, usually on laparoscopy or laparotomy, to have a congenital absence of their appendix. There have been no reports of impaired immune or gastrointestinal function in these people.

One explanation has been that the appendix is a vestigial structure with no current purpose.[citation needed] The appendix is thought to have descended from an organ in our distant herbivorous ancestors called the cecum (or caecum). The cecum is maintained in modern herbivores, where it houses the bacteria that digest cellulose, a chemically tough carbohydrate that these animals could not otherwise utilize. The human appendix contains no significant number of these bacteria, and cellulose is indigestible to us. It seems likely that the appendix lost this function before our ancestors became recognizably human.[

Answer 2

Currently, the function of the appendix, if any, remains controversial in the field of human physiology. It has been known to cause the ability to process bark, leaves and other things of that nature.

There have been cases of people who have been found, usually on laparoscopy or laparotomy, to have a congenital absence of their appendix. There have been no reports of impaired immune or gastrointestinal function in these people.

One explanation has been that the appendix is a vestigial structure with no current purpose. The appendix is thought to have descended from an organ in our distant herbivorous ancestors called the cecum (or caecum). The cecum is maintained in modern herbivores, where it houses the bacteria that digest cellulose, a chemically tough carbohydrate that these animals could not otherwise utilize. The human appendix contains no significant number of these bacteria, and cellulose is indigestible to us. It seems likely that the appendix lost this function before our ancestors became recognizably human.[

Answer 3

The Appendix is proof of evolution, not so much because it is useless, but because of its shrinking size.
As a blind ended tube, if something gets in there, is does not easily get out. The result? Appendicitis - fatal if not treated. The smaller the appendix, the less likely it is to become blocked with indigestible seeds etc. Until recently, surgery was not an option, and if performed, post-operative peritonitis was a common complication - and fatal before antibiotics. Many people in the world still die from appendicitis due to not receiving proper treatment.
Natural selection now comes into play - the benefits of having an appendix (digestibility of grass, bark etc) are outweighed by the disadvantages associated with dying from appendicitis before having offspring. So anyone with a larger appendix was less likely, in a population setting, to survive to adulthood to have offspring.
So the number of small-appendicated people increased.

Answer 4

The appendix (an example of vestigial structures) it is the remnant of the caecum, a digestive organ containing cellulose-digesting bacteria found in many herbivores, but in humans it has no function

Answer 5

The appenix used to help breakdown tough things such as tree bark, but since we stopped eating bark and that kind of thing, it doesnt do anything anymore, and that is why it can be removed without having to add something back to make up for anything.

Answer 6

Vestigial structures such as the Vermiform appendix

Answer 7

whiile tempted to say the brain for our elected officals or neo cons, the appendix used to aid in the digestion of uncooked foods including raw meat, it is now useless

Answer 8

APPENDIX which is part of the big intestine. In humans, at time, on medical grounds, it can even be cut off withou causing any risk aftrewards

Answer 9

The appendix is not used ,because we no longer eat rocks that have to be broken down ,and digested

Answer 10

I think it was the appendix. And it was used to do something to the sticks, stones, and bones that we ate way back in prehistory.