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Our system is the excretory system. The purpose of the system is to get rid
of materials that the body doesn't need anymore. It's essential to do this
because otherwise waste would get blocked up and eventually poison you. You
will hear about how waste is gotten rid of by the body in this report.
For solid waste, you need to have waste products which could include undigested
food, water, salt, skin cells, bacteria, bacterial waste and pigment. All
these things come together and, as they go through the small intestine, these
things get filtered from the things you need to live on. The waste products
get pushed on to the large intestine and then exit the body. The brown color
comes from bacteria breaking down other bacteria. Some diseases you could
get in this system are diarrhea and the intestinal flu.
For liquid waste, blood goes through the kidneys and the kidneys filter out
any waste products which is mostly extra water (99.8%), salts and urea. Liquid
waste is made by the kidneys filtering blood and taking out any waste products.
When the kidneys filter this, it filters down into the bladder which fills
up like a balloon. Then nerves inside the bladder tell your brain that you
better go pee right away. Your brain usually says, "no, don't bother me now."
This delaying can go on for a little while, but then you will really need
to go and you better find a place quick. Liquid waste is cleaner than the
skin on your face and the spit in your mouth. That's because it is not home
to bacteria. Diseases you can get from liquid waste are . What this disease
does is make your kidneys stop filtering blood and that will eventually kill
you if you don't get it treated. Another thing that can go wrong is if you
have some kind of accident where one of your kidneys gets destroyed. In that
case the other kidney gets bigger to accommodate that.
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