peritoneal cavity
Quick Summary
The peritoneal cavity is the space within the abdominal cavity that is lined by the peritoneum. This membrane covers both the abdominal wall (parietal peritoneum) and the organs within (visceral peritoneum). The small amount of fluid in the peritoneal cavity acts as a lubricant, allowing organs to move freely. The peritoneum also supports and anchors these organs through folds like the omentum and mesentery.
A serious condition affecting this space is peritonitis, which is an inflammation of the peritoneum. This can be caused by bacterial infection, often from a ruptured organ like the appendix, leading to pain, vomiting, and fever. Treatment typically involves antibiotics and sometimes surgery to address the source of infection.
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