Abdominal wall Body cavities Diagram of sheath of Rectus above the arcuate line. Latin paries abdominalis 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 according to what it covers (e.g., transversalis, psoas fascia).
Superficial to these, but not present in the posterior wall, are the three layers of muscle: the transversus abdominis (transverse 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):
- Camper's fascia - fatty superficial layer.
- Scarpa's fascia - deep fibrous layer.
- Rectus abdominis
- External oblique muscle
- Internal oblique muscle
- Transverse abdominal muscle
- Fascia transversalis
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
- skel&wallsabd at The Anatomy Lesson by Wesley Norman (Georgetown University) - "Skeleton of the Abdomen", Wesley Norman, PhD, DSc
- MeSH Abdominal+Wall
- Anterolateral Abdominal Wall - University of Edinburgh Faculty of Medicine
- Muscles of the Anterior Abdominal Wall - University of Arkansas
Abdominopelvic cavity: Abdomen/Abdominal cavity and Pelvis/Pelvic cavity and Peritoneal cavity (TA A10, TH H3.04.08, GA 4.408 and GA 11.1147) Extraperitoneal spaceRetroperitoneal space · Retropubic space Peritoneal ligaments,
mesenteries, and foldsAbdominalFrom ventral mesenteryFrom dorsal mesenteryUmbilical folds (Supravesical fossa, Medial inguinal fossa, Lateral umbilical fold, Lateral inguinal fossa) · Ileocecal foldGeneralUrogenital peritoneumUterus/ovariesRecesses
List of muscles of abdominopelvic cavity (TA A04.5, GA 4.408) Abdomen/
lateralMuscleFasciaInguinal ligament (Pectineal ligament, Lacunar ligament, Reflected ligament)PosteriorMuscleFascia
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