In human anatomy
, the vermiform appendix
(or just appendix
) is a small sac connected to the large intestine
. It was once believed to be a useless and purely vestigial organ; but newer evidence suggests it most likely has a function in the lymphatic system
. It is one of a number of areas of the colon
where lymphatic tissue[?]
is present; but in the appendix it is present in a particularly high proportion, although it degenerates with age and comes to resemble other areas of lymphatic tissue in the colon.
An operation to remove the appendix is an appendectomy.
The most common diseases of the appendix (in humans) are :
see also digestive system
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