The Gallbladder is a thin-walled sac, 8-12 cm long and 4-5 cm wide, which serves as a reservoir (30-80 ml) for bile. The gallbladder lies on the visceral surface of the liver and is connected with the common hepatic duct by the cystic duct. The gallbladder is located at the tip of the right ninth costal cartilage in the transpyloric plane.