The different layers of the gallbladder are as follows:
* The [[gallbladder]] has a [[Simple columnar epithelium|simple columnar]] [[epithelium|epithelial]] lining characterized by ''recesses'' called Aschoff's recesses, which are pouches inside the lining.
* Under the epithelium there is a layer of [[connective tissue]] (''lamina propria'').
* Beneath the connective tissue is a wall of [[smooth muscle]] (''muscularis muscosa'') that contracts in response to [[cholecystokinin]], a [[peptide]] [[hormone]] secreted by the [[duodenum]].
* There is essentially no [[submucosa]] separating the connective tissue from [[serosa]] and [[adventitia]].
[[دوتنه:Gallenblase_-_Schnitt.jpg|thumb|250px|right|Stained section of a gall bladder showing the highly convoluted mucosal folds]]
