• The peritoneum is the largest serous membrane in the body, with a surface area of about 22,000 cm2.
• The parietal peritoneum
lines the abdominal and pelvic cavities and the abdominal surface of the diaphragm.
• The visceral peritoneum
covers the abdominal and pelvic viscera and includes the mesenteries.
• The potential space between these two layers is the peritoneal cavity;
it is filled with a small amount (about 50 mL) of slippery serous fluid that allows the two layers to slide freely over each other.