Extraperitoneal fascia

Extraperitoneal fascia (also: endoabdominal fascia or subperitoneal fascia) is a fascial plane – consisting mostly of loose areolar connective tissue – situated between the fascial linings of the walls of the abdominal and pelvic cavities (transversalis fascia, anterior layer of thoracolumbar fascia, iliac fascia, and ) externally, and the parietal peritoneum internally. Its quality and quantity varies considerably. It occupies the extraperitoneal space.