The abdominopelvic cavity is lined with a serous membrane referred to as the peritoneum. This membrane expands from the interior surface of the abdominal wall to totally or partially surround organs of the abdominopelvic cavities.

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The peritoneum is a serous membrane that is composed of 2 layers: parietal peritoneum and also visceral peritoneum (Figure 8-1A–C). The parietal peritoneum present the inner walls that the abdominal cavity, forming a closed sac known as the peritoneal cavity. The peritoneal cavity is totally closed in males. In females, the peritoneal cavity has actually two openings whereby the uterine tubes, uterus, and vagina provide a passage to the outside. The parietal peritoneum reflects off that the posterior abdominal wall, forming a fused, dual layer the peritoneum bordering the blood vessels, nerves, and lymphatics to abdominal muscle organs. This double layer of peritoneum, known as the mesentery, suspends the jejunum and ileum from the posterior abdominal muscle wall. The peritoneum that surrounds the gut pipe is referred to as the visceral peritoneum. The peritoneal membranes produce a serous liquid that lubricates the peritoneal surfaces, permitting the intraperitoneal organs to slide across one an additional with minimal friction.

Figure 8-1Graphic jump Location

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A. Sagittal section of the peritoneum and also mesentery. B. Relationship of the mesentery and neurovascular supply to the intraperitoneal organs. C. Axial (cross-section) of the peritoneum and also mesentery.