what was the former function of the appendix and why is it now useless in humans?

Question

Same question for "wisdom teeth", "little toe", "muscles that move ears", and "tail bones"

Answer 1

We can never be sure what the former function of the appendix was, but some people say it was to digest cellulose (which is in plants and grass, which we don't eat anymore).

We evolved, and so there was no longer a use for appendixes, with us eating meat and veggies now. It just became smaller and smaller over time, and as my doctor once said 'is just there for us doctors to take out.'

Answer 2

The appendix may not be useless now. It's possible that we just don't understand about it yet. However, other mammals that eat rough plant material use a pouch-like structure that seems to be related to our appendix to work on the hard-to-digest plant matter.

Wisdom teeth are useful now if they come in correctly and the person has enough room for them. Our distant ancestors had bigger jaws and ate rougher foods and needed sturdier "choppers".

Our little toes are still needed for balance, so I don't think they belong in this list.

Muscles that move ears ... use your imagination ...