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.
This causes the appendix to become irritated and swollen, ultimately leading to appendicitis. The appendix is in the lower right side of your abdomen. Itâs a narrow, tube-shaped pouch protruding from your large intestine. Although the appendix is a part of your gastrointestinal tract, itâs a vestigial organ. This means that it provides no vital function and that you may live a normal, healthy life without it. The purpose of the appendix is unknown.