Editing Peritoneum (section)

===Development===
The peritoneum develops ultimately from the [[mesoderm]] of the [[trilaminar embryo]]. As the mesoderm differentiates, one region known as the [[lateral plate mesoderm]] splits to form two layers separated by an [[intraembryonic coelom]]. These two layers develop later into the visceral and parietal layers found in all [[serous cavity|serous cavities]], including the peritoneum.

As an [[embryo]] develops, the various abdominal organs grow into the abdominal cavity from structures in the abdominal wall. In this process they become enveloped in a layer of peritoneum. The growing organs "take their blood vessels with them" from the abdominal wall, and these blood vessels become covered by peritoneum, forming a mesentery.<ref>{{cite web|url=http://healthoracle.org/downloads/P/Peritoneum.pdf | archive-url = https://web.archive.org/web/20160423062639/http://healthoracle.org/downloads/P/Peritoneum.pdf | archive-date = 23 April 2016 |title= Peritoneum |website=healthoracle.org|access-date=14 April 2018}}</ref>

Peritoneal folds develop from the [[ventral mesentery|ventral]] and [[dorsal mesentery]] of the embryo.<ref name="Drake2009p295"/>