In humans, the gallbladder stores bile, which is a yellowish-brown fluid that is secreted by the liver to aid in fat digestion, states Healthline. During digestion, the gallbladder secretes the stored bile through the bile duct to the upper region of the small intestine, called the duodenum, explains Mayo Clinic.
The gallbladder is part of the biliary system, which consists of the liver, gallbladder, pancreas and associated structures, states The Princess Grace Hospital.
The gallbladder can be removed in a surgical procedure called cholecystectomy, which is typically performed to resolve the occurrence or recurrence of gallstones, states the Society of American Gastrointestinal and Endoscopic Surgeons. Patients who have undergone this surgery typically enjoy normal digestive function.