Final answer:
The assertion that bile is produced by the liver but stored in the gallbladder is true. The gallbladder stores and concentrates bile until it is needed for the digestion of fats in the duodenum, where bile is secreted from the gallbladder.
Step-by-step explanation:
The statement that bile is produced by the liver but stored in the gallbladder is True. Bile plays a critical role in digestion, specifically in the emulsification of fats. It is a fluid produced by hepatocytes in the liver and is indeed stored in the gallbladder between meals. The gallbladder aids the liver by storing and concentrating bile salts, ready to be released into the duodenum when fatty chyme enters from the stomach.
Additionally, people who have their gallbladder removed may experience digestive problems when consuming high-fat meals, as they lack the reservoir of concentrated bile that helps to break down fats efficiently. The liver is also a gland because it secretes bile through the biliary system. Furthermore, substances secreted by the pancreas, such as digestive enzymes, enter into the duodenum through the common bile duct alongside bile. Bile does contain metabolic waste products that the body needs to excrete.