What is this Colon?

The colon is the last five feet of the digestive tract. It is a hollow tube like organ made up of muscle that moves digested food along by a wave like motion known as peristaltic action. The colon is the living area for a host of bacteria that produce vitamins, such as K and some B vitamins. The colon also absorbs water, nutrients, proteins and cell salts back into the blood stream.