What is the function of the gallbladder in the human body?

The gallbladder serves a specific function in the digestive system by storing bile, which is produced by the liver. Bile is a digestive fluid that helps emulsify fats, making them easier for enzymes to break down during digestion. When food, especially fatty food, enters the small intestine, the gallbladder contracts and releases stored bile into the duodenum to aid in the digestion process. This role is crucial for the efficient digestion and absorption of dietary fats, as well as for the overall digestive health of the body. The gallbladder itself does not produce insulin, filter blood, or absorb nutrients, which distinguishes its function clearly within the context of digestion.