Which statement is true?

Which statement is true?

• A. Visceral peritoneum lines the abdominal cavity
• B. Parietal peritoneum lines the abdominal cavity
• C. Mesenteries anchor the pancreas to the body wall
• D. Haustra are neurons in the intestinal wall

Answer: (B)

The main idea here is how the peritoneal membranes are arranged in the abdomen. The parietal peritoneum lines the inner surface of the abdominal wall and the cavity itself, while the visceral peritoneum wraps around the surfaces of most abdominal organs. The space between them is the peritoneal cavity, which contains a small amount of lubricating fluid. So the statement that the parietal peritoneum lines the abdominal cavity is true. Mesenteries are double sheets of peritoneum that suspend and anchor portions of the intestines to the posterior abdominal wall, bringing with them blood vessels, nerves, and lymphatics. They help stabilize the intestines rather than anchoring other organs. The pancreas, by contrast, is largely retroperitoneal, meaning it lies behind the peritoneum and is not held in place by a mesentery. So that statement wouldn’t be accurate. Haustra are not neurons; they are the pouch-like bulges of the colon created by the muscle bands (taenia coli) constrictions in the wall. They are a feature of the large intestine’s appearance, not a neuronal structure. So the correct understanding is that the parietal peritoneum lines the abdominal cavity.

The main idea here is how the peritoneal membranes are arranged in the abdomen. The parietal peritoneum lines the inner surface of the abdominal wall and the cavity itself, while the visceral peritoneum wraps around the surfaces of most abdominal organs. The space between them is the peritoneal cavity, which contains a small amount of lubricating fluid. So the statement that the parietal peritoneum lines the abdominal cavity is true.

Mesenteries are double sheets of peritoneum that suspend and anchor portions of the intestines to the posterior abdominal wall, bringing with them blood vessels, nerves, and lymphatics. They help stabilize the intestines rather than anchoring other organs.

The pancreas, by contrast, is largely retroperitoneal, meaning it lies behind the peritoneum and is not held in place by a mesentery. So that statement wouldn’t be accurate.

Haustra are not neurons; they are the pouch-like bulges of the colon created by the muscle bands (taenia coli) constrictions in the wall. They are a feature of the large intestine’s appearance, not a neuronal structure.

So the correct understanding is that the parietal peritoneum lines the abdominal cavity.