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.
It is located at the junction where small and large intestines join each other, i.e. in the right lower abdominal quadrant. Find it somewhere between the top section of the pelvic bone and the navel area. Normally, we cannot determine the exact location of the appendix and even in the scanned image. However, it is not clearly visible. You can locate this body organ in the specified abdominal chamber, when the visceral organs in human body are at their normal positions.