Which of the following are retroperitoneal organs?

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Multiple Choice

Which of the following are retroperitoneal organs?

Retroperitoneal organs sit behind the peritoneum, in front of the posterior abdominal wall, and lack a mesentery that suspends them freely in the cavity. Among the options, the kidneys and the pancreas fit this placement: the kidneys lie against the posterior abdominal wall with only a minimal peritoneal covering, and the pancreas is largely retroperitoneal along the back of the abdominal cavity. In contrast, the stomach and liver are intraperitoneal, meaning they are enveloped by peritoneum and usually suspended by mesenteries. The heart and lungs reside in the thoracic cavity, not the peritoneal cavity, so they aren’t retroperitoneal. Thus, the combination that truly comprises retroperitoneal organs is kidneys with pancreas.

Retroperitoneal organs sit behind the peritoneum, in front of the posterior abdominal wall, and lack a mesentery that suspends them freely in the cavity. Among the options, the kidneys and the pancreas fit this placement: the kidneys lie against the posterior abdominal wall with only a minimal peritoneal covering, and the pancreas is largely retroperitoneal along the back of the abdominal cavity. In contrast, the stomach and liver are intraperitoneal, meaning they are enveloped by peritoneum and usually suspended by mesenteries. The heart and lungs reside in the thoracic cavity, not the peritoneal cavity, so they aren’t retroperitoneal. Thus, the combination that truly comprises retroperitoneal organs is kidneys with pancreas.

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