Thursday, February 11, 2010

Appendix the useless organ? Maybe not

I'm sort of spamming posts now because they are all due tomorrow, something the English teacher failed to mention. As I care fully pondered on what to write about, it suddenly hit me that people enjoy reading things that capture attention. Isn't that a surprise? So naturally I thought of a controversial topic that makes people shocked (no, I'm not talking about Toyota). Well, truth is that I'm a creationist (don't believe in evolution), and I actually do research on it. Call me a nerd, but the human appendix isn't really useless. Yay. Here's the link if you want to see more: http://creation.com/your-appendix-its-there-for-a-reason. Nice URL right? Anyway, for those who do not already know, the appendix is either a small, worm-like organ located at the under the gut or the section at the back of a book. We're talking about the first one here. Most people think it's useless, but actually the appendix is part of the immune system, it's function? To repopulate the gut when disease wipes out all the good bacteria. It may also help to identify between good and bad bacteria. Now that you've heard my dumbed-down explanation, here's what the experts have to say:

"Today, the appendix is recognized as a highly specialized organ with a rich blood supply. This is not what we would expect from a degenerate, useless structure.
The appendix contains a high concentration of lymphoid follicles. These are highly specialized structures which are a part of the immune system. The clue to the appendix’s function is found in its strategic position right where the small bowel meets the large bowel or colon. The colon is loaded with bacteria which are useful there, but which must be kept away from other areas such as the small bowel and the bloodstream.
Through the cells in these lymphoid follicles, and the antibodies they make (see box below), the appendix is ‘involved in the control of which essential bacteria come to reside in the caecum and colon in neonatal life’.6 Like the very important thymus gland in our chest, it is likely that the appendix plays its major role in early childhood. It is also probably involved in helping the body recognize early in life that certain foodstuffs, bacterially derived substances, and even some of the body’s own gut enzymes, need to be tolerated and not seen as ‘foreign’ substances needing attack."

Wow. I think I just exceeded my word count. So today you have learnt something new so smile and share it with the world! (If you would prefer a less biased source, go to this website: http://www.scientificamerican.com/article.cfm?id=what-is-the-function-of-t

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