LIVER AND GALLBLADDER 3D MODEL:The liver regulates most of the chemical levels in the blood and excretes a product called bile, which helps break down fats and prepares them for further digestion and absorption. All the blood that leaves the stomach and intestines passes through the liver. The liver processes this blood and separates its components, balances them, and creates nutrients for the body to use. It also metabolizes drugs in the blood so they are easier for the body to use. Many vital functions of the liver have been identified.