Which small sac near the liver concentrates and stores bile?

The small sac near the liver that concentrates and stores bile is the gallbladder. Bile is produced by the liver and has a crucial role in the digestion of fats. After bile is produced, it is stored in the gallbladder until it is needed. When fatty foods enter the intestine, the gallbladder contracts, releasing bile into the small intestine to aid in the digestion and absorption of fats.

The pancreas, while important in digestion, primarily produces enzymes and hormones rather than storing bile. The liver produces bile, but it does not store it; that function specifically belongs to the gallbladder. The intestines serve as the site where digestion and absorption occur, not as a storage location for bile. Thus, the gallbladder is uniquely suited for the task of concentrating and storing bile until the body requires it for digestion.