This video explains the detailed histological features of the gallbladder, the organ that stores and releases bile during digestion. Here we also discuss rokitansky-aschoff sinuses that might be associated with gallstones. 0:00 introduction 1:08 layers of gallbladder wall 1:21 mucosa 1:38 gallbladder folds 1:55 rokitansky- aschoff sinuses 2:18 epithelium 3:00 lamina propria 3:22 muscular layer 3:42 serosa 3:55 vessels