== Gallbladder ==
[[File:HistologicChapter12GallbladderDiagram.jpg|thumb|200px|Gallbladder Diagram]]
The pear-shaped gallbladder shows marked variation in size and shape among different individuals. Anatomically, it consists of a neck, a body, and a blindly ending fundus. Histologically, its wall consists of a mucosa, a muscularis, a perimuscular layer of connective tissue, and a serosa or fibrosa.