1 Charting the Labor Market (monthly)âa package of charts featuring data from the Current Population Survey. 2  Subscribe to the BLS News Service -- receive The Employment Situation news releases by e-mail.
Medical Definition of peritoneal cavity. : a space formed when the parietal and visceral layers of the peritoneum spread apart.
The abdominal cavity (the space bounded by the vertebrae, abdominal muscles, diaphragm, and pelvic floor) should not be confused with the intraperitoneal space (located within the abdominal cavity, but wrapped in peritoneum). 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. 2  The term mesentery is often used to refer to a double layer of visceral peritoneum.