where is the colon located and what is it's purpose?
The colon is basically the lower part of your small intestine. like the rest of your digestive system (stomach, esophagus, etc.) it helps you digest food.
The colon is the last portion of the digestive system in most vertebrates; it extracts water and salt from solid wastes before they are eliminated from the body.
http://en.wikipedia.org/wiki/Colon_%28anatomy%29
