The small intestine is the primary site of digestion and absorption in the body. This chemical digestion is possible thanks to the digestive enymes secreted by the pancreas.

While it is true that the liver creates and secretes bile, storage of bile is accomplished by the gall bladder.

The majority of chemical (enzymatic) digestion occurs in the duodenum, the first segment of the small intestine. Proteases, amylase, lipases, and other enzymes are secreted into the duodenum from the pancreas. These enzymes are used to digest proteins, carbohydrates, and lipids, respectively.

The liver produces bile, which is stored in the gall bladder. During digestion, bile is released to help emulsify fats for digestion. The spleen is part of the lymphatic system, and is not involved in digestion.