Abdominal wall

In anatomy, the abdominal wall represents the boundaries of the abdominal cavity. The abdominal wall is split into the posterior (back), lateral (sides) and anterior (front) walls.

There is a common set of layers covering and forming all the walls: the deepest being the parietal peritoneum, the extraperitoneal fat, the transversalis fascia, the internal and external oblique and transversus abdominis aponeuroses, and a layer of fascia, which has different names according to what it covers (e.g., transversalis, psoas fascia).