Peritoneal relations (isolated) (Latin)

Organs which are completely surrounded by peritoneum viscerale and connected by mesentery are called intraperitoneal organs (organa intraperitonealia). Most intraperitoneal structures are associated with the gastrointestinal tract as this organization allows for both support and movement.In contrast, organs located behind the parietal peritoneum are referred to as the retroperitoneal organs (organa retroperitonealia). If they develop and remain outside the peritoneum, they are referred to as the primary retroperitoneal organs. Secondary retroperitoneal organs initially develop within the peritoneum and become retroperitoneal when their mesentery fuses with the posterior abdominal wall during embryonic development. Infraperitoneal organs are organs that lie inferior to the cavitas peritonealis.