Submitted by tulaero23 t3_11bx6q0 in explainlikeimfive
I'm just curious why are assholes which is constantly exposed to germs is not causing any infections or at least getting irritation from being constantly exposed to shit which is dirty.
Submitted by tulaero23 t3_11bx6q0 in explainlikeimfive
I'm just curious why are assholes which is constantly exposed to germs is not causing any infections or at least getting irritation from being constantly exposed to shit which is dirty.
Seems like a perfect ELI5 answer! Well done
So, our entire digestive system is technically the "outside" of out bodies. Our immune system keeps most little breaches that might happen under control. There also a healthy supply of "good" bacteria inside of us, that usually helps keep "bad" bacteria from taking hold.
Like a Klein bottle!
I don't know if your intestines require the 4th dimension, but mine are rather like a donut.
Depending on what I eat....sometimes it seems like my system folds space and time and just shoots that shit out of me almost immediately.
More like a doughnut (or a mug)
They're being exposed to bacteria that are already present in your lower digestive tract. Those bacteria can be harmful if you eat them (fecal-oral is a very common way that food poisoning bacteria spread), but they're not dangerous in your intestines or (directly) dangerous on your skin (except that having them on the skin of, say, your hands can be a good way to end up with them in your mouth).
also your tongue, if it gets a cut it rarely gets infected, it makes its own antibacterial proteins
Saliva right ? It’s a natural painkiller
I dont know about that, we have our flora in the mouth, might not be good if we eat a lot of sugar, they fight other nasty bacteria that is much worse for us
You mean they aren't meant to?
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Additionally, all bacteria and microbes, that come out of your butt have already been inside your body, so you cannot get any "new" infections this way. Nevertheless, getting as many of them out without re-entering helps a lot
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Sablemint t1_ja0fjia wrote
First reason is that mucosal tissue creates a physical barrier that is very hard for microbes to get through. Additionally, the vast majority of lymphocytes in your body are found in those tissues. And your immune system is just in general much more active there too. When cells detect an invading organism they don't call for help, they just initiate the immune response themselves.
Of course, it would be horrible for our entire bodies to be composed of this sort of tissue. its great against microbes, but not so great about mechanical damage. So you only find it where its most important.