=== Urinary Bladder ===
[[File:HistologicChapter15Bladder.jpg|thumb|200px|Urinary Bladder]]
The urinary bladder consists of a mucosa, a muscularis and an adventitia that is either a fibrosa (where it blends with the connective tissue of surrounding structures) or a serosa (found only on the superior surface where the bladder is covered with peritoneum).