The gallbladder is a sac located under the liver. It stores and concentrates the bile produced in the liver. Bile is released from the gallbladder in response to food, especially fats, in the upper small intestine.
Review Date: 7/6/2009 Reviewed By: George F. Longstreth, MD, Department of Gastroenterology, Kaiser Permanente Medical Care Program, San Diego, California. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.