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Animoto Arctic Explorer Vilhjalmur Stefansson media type="custom" key="8519272" align="center" Wes Janzen 02/03/2011     Mr. Yawn How the Excretory System Helps the Human Body as a Whole Without the Excretory System we, as humans could not survive. The Excretory System expels waste and toxins, like excess water and urea, a chemical that comes from protein that has broken down. If these wastes and toxins are not disposed of, they will build up, making us sick, and possibly die. The Excretory system, among other things, prevents wastes and toxins from building up, and disturbing homeostasis, thus destabilizing ones internal conditions, making you very, very sick. In short, the Excretory System disposes of harmful waste, bacteria and toxins, which could easily build up, and make us very sick, or possibly kill us. The Excretory System is just one of many parts within the human body that is necessary for it to function properly; it is also one of many necessary parts within the human body that is taken for granted every day. References · [] · [] · [] · http://stannnormandy.wikispaces.com/Excretory+System · [] · []