Define intraperitoneal.

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Intraperitoneal means located inside the peritoneal cavity and surrounded by peritoneum. The peritoneum is a continuous membrane with a parietal layer lining the abdominal wall and a visceral layer covering organs, creating the peritoneal cavity between them. Intraperitoneal organs are typically connected to the body wall by mesenteries or ligaments, which allows them to be relatively mobile within the cavity. The other descriptions place organs behind the peritoneum (retroperitoneal) or outside the peritoneal cavity, so they describe different relationships to the peritoneum.