The gallbladder is a sac attached to the undersurface of the liver and is a storage reservoir for bile. Bile is made in the liver and passes down through a duct and up into the gallbladder. After one eats, the bile is released into the small intestine to mix with the food for better digestion and absorption of fat. The removal of the gallbladder by surgery, however, does not significantly interfere with the process of digestion or absorption.