The |liver| is the largest of the body's |glands| and is responsible for several important functions. Weighing about three pounds, the red-brown organ features a high degree of vascularity which is responsible for its dark color. Located mostly on the right side of the abdominal cavity, just above the |duodenum|, the liver aids in the digestion of |fats| by secreting ~bile~ into the |duodenum|. The |liver| also destroys red |blood cells|, forms urea for the excretion of nitrogenous wastes, forms fibrinogen, used in ~blood~ coagulation, stores glycogen, helps in the metabolism and storage of |vitamins|, and produces protective and antitoxic substances, among its many functions.