A sheet or band of connective tissue covering or binding together parts of the body, such as muscles or organs, that form part of the general layer which lines the walls of the abdominal cavity and covers the abdominal organs: The abdominal fascia is subdivided into "visceral abdominal fascia" (internal organs of the abdomen), "parietal abdominal fascia" (connective tissue lining the wall of the abdominal cavity), and "extraperitoneal fascia" (thin layer of connective tissue and adipose or fat tissue).