Largest hollow space of the body, between the diaphragm and the top of the pelvic cavity and surrounded by the spine and the
It contains most of the alimentary canal , the liver and pancreas , the spleen , the kidneys , and the adrenal glands . It is lined by the peritoneum, a membrane covering the cavity's inside wall (parietal peritoneum) and each organ or structure in it (visceral peritoneum). Disorders include ascites (fluid in the peritoneal cavity) and {{link=peritonitis">peritonitis .