Well, the body doesn't carry excess baggage around for nothing. The appendix has been adapted into a lymphoid organ too. The appendix looks somewhat similar to the tonsils in that it has crypts penetrating from the gut opening deep into the tissue and around these are numerous lymphoid follicles. That concludes our look at organs of the immune system. You can see that we have a range of organs with different functions.
Some organs are vital to our survival such as the bone marrow.
The thymus is crucial in the development of T cells and the spleen is extremely important in our defense but we can survive without them with the aid of modern medicine to keep us healthy. The peripheral organs, lymph nodes and mucosal associated lymphoid tissue, are expendable without too much damage to our defense.