Jones & Bartlett Learning (JBL) Module 4B Practice Exam

Which organ lies in the retroperitoneal space?

Liver Spleen Gallbladder Pancreas

Correct Answer:

Pancreas

Explanation:

The key idea is understanding which organs sit behind the peritoneum, in the retroperitoneal space. The pancreas fits here because most of it lies behind the stomach, against the posterior abdominal wall, with its anterior surface covered by peritoneum and its posterior surface in contact with structures like the aorta and the superior mesenteric vessels. That positioning is the hallmark of retroperitoneal organs. In contrast, the liver is largely within the peritoneal cavity, covered by peritoneum and connected to the abdominal wall by ligaments; the gallbladder sits on the underside of the liver, also intraperitoneal; and the spleen hangs in the peritoneal cavity within ligaments like the splenorenal and gastrosplenic. So these are not retroperitoneal.

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