Which digestive fluid is stored and concentrated by the gallbladder?

• A. Bile
• B. Pancreatic juice
• C. Saliva
• D. Gastric juice

Answer: (A)

Bile is the digestive fluid stored and concentrated by the gallbladder. The liver constantly makes bile, and the gallbladder acts as a storage and concentrating organ, removing water and ions to make bile more concentrated. When fatty foods enter the small intestine, the gallbladder contracts and bile is released into the duodenum to help emulsify fats, making digestion more efficient. Pancreatic juice, saliva, and gastric juice come from the pancreas, salivary glands, and stomach, respectively, and are not stored or concentrated by the gallbladder.