Which is the role of the gall bladder?

The role is that it helps you with the urinal system and makes the things in your body go out of the body. (hopes it at least helped a little! (=^T^=)

The gallbladder is a small storage organ located inferior and posterior to the liver the small in size the gallbladder plays an important role in our digestive of food the gallbladder hold bile produced in the liver until it is needed for digesting fatty food in the duodenum of the small intestine

Amillion dollars

The answer would be sand and gravel