From Wikipedia, the free encyclopedia. The peritoneal cavity is a potential space between the parietal peritoneum and visceral peritoneum, that is, the two membranes that separate the organs in the abdominal cavity from the abdominal wall.he peritoneal cavity is the largest serosal sac in the body and secretes approximately 50 ml of fluid per day. This fluid acts as a lubricant and has anti-inflammatory properties.
The appendix is located in the lower right portion of the abdomen.The spleen is tucked under the left side of the diaphragm.
Pay attention to abdominal pain. In most adults, your appendix can be located on the lower right side of your abdomen usually one third of the way between your belly button and hip bone. Note that this location may be different for pregnant woman. Watch for a path of pain.