Sparked by Duff's kidney Q, I'd heard that the appendix secreted something that helped with the digestion of flora (not the sunflower spread) - is it true?
I don't think it actually secreted anything.
It was typically filled with bacteria which was supposed to help digest the cellulose in plant cell walls.
Quite a few people are born without an appendix. And those who have them removed later don't really notice any difference.
Rabbits have a relatively large appendix due to their diet being mainly grass.
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