|Diagram of sheath of Rectus above the arcuate line.|
|Gray's||subject #118 408|
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 extraperitoneal fat, the parietal peritoneum, and a layer of fascia which has different names over where it covers (eg transversalis, psoas fascia).
Superficial to these, but not present in the posterior wall are the three layers of muscle, the transversus abdominis (tranvserse abdominal muscle), the internal (obliquus internus) and the external oblique (obliquus externus).
Layers of anterior abdominal wall
In human anatomy, the layers of the abdominal wall are (from superficial to deep):
- Deep fascia or subserous fascia
The surface contains several ligaments separated by fossae:
|Ligament/fold||Remnant of||Lateral fossa||Hernia|
|median umbilical ligament||urachus||supravesical fossa||-|
|medial umbilical ligament||umbilical artery||medial inguinal fossa||direct inguinal hernia|
|lateral umbilical fold||inferior epigastric vessels||lateral inguinal fossa||indirect inguinal hernia|
- Anatomy at MUN digest/abwall
- Norman/Georgetown skel&wallsabd - "Skeleton of the Abdomen", Wesley Norman, PhD, DSc
- Abdominal+Wall at the US National Library of Medicine Medical Subject Headings (MeSH)
- Anterolateral Abdominal Wall - University of Edinburgh Faculty of Medicine
- Muscles of the Anterior Abdominal Wall - University of Arkansas