Other contributors have said "What is the colon in your body?" is the same question as "What is the job of the colon in a humans body?" If you believe that these are not asking the same thing and should be answered differently, click here
The job of the colon is to reabsorb water, vitamins, minerals, and electrolytes from the chyme that enters from the iliocecal valve. Water is an important nutrient and the body does what it can to preserve it in order to maintain homeostasis.
It's job is to filter the wastes and excess fluid from our body, the wastes and fluids are excreted as urine and the nutrients are still on our body. The kidney also aids in the regulation of blood...