the liver is the largest organ in the body. It weight a little more than three pounds in an adult. It is wedge-shaped and is situated under the diaphragm, mostly on the left side of the body, where it is protected by the lower ribs. Somewhat like an intricate chemical factory, the liver takes the particles of glucose (which come from digested starches and sugars)and changes them into another kind of carbohydrate called glycogen, which it then stores. When the body needs sugar. the liver tums the glycogen into glucose again and sends it to the body tissues through the bloodstream