The peritoneum and peritoneal cavity structure includes parietal peritoneum (lining abdominal/pelvic walls) and visceral peritoneum (covering organs). The greater sac is the main cavity; lesser sac (omental bursa) lies behind stomach, communicates via epiploic foramen. Mesenteries, omenta, ligaments suspend organs; fluid collects in recesses (subphrenic, subhepatic, paracolic gutters).
Structure of the Peritoneum and Peritoneal Cavity Diagram
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