The human gallbladder weighs 2 to 2.5 ounces. It is about 3 to 4 inches long and about 1.5 inch wide. The gallbladder is located just under the liver and aids in digestion and excretion. It is a pear-shaped hollow organ.
The gallbladder stores the bile secreted by the liver. It cannot store more than 100 milliliters of bile at any time. The bile from the gallbladder is released into the duodenum and the small intestine through the bile duct. Along with the liver and the pancreas, the gallbladder forms the biliary tract that helps to remove waste from the body.