This organ is often removed when substances made of cholesterol and calcium salts, its namesake stones, become painful to a patient.
This organ disappears in lampreys during development from larvae to the mature organism. One disorder in this organ can be diagnosed with a strongly positive Murphy's sign, and is often treated with prolonged consumption of ursodiol. Cancer in this organ is often preceded by a calcification of its walls, a condition commonly called having a "porcelain" form of this organ. Discharge from this organ is controlled by the sphincter of Oddi, and the substance stored in this organ is sent to the duodenum by a certain duct. This organ is often removed when substances made of cholesterol and calcium salts, its namesake stones, become painful to a patient. For 10 points, name this organ that stores the bile it receives from the liver.
This organ disappears in lampreys during development from larvae to the mature organism.
gallbladder