Posterior Abdominal Wall Flashcards
Which 5 muscles make up the floor of the posterior abdominal wall?
Psoas major m. Psoas minor m. Iliacus m. Quadratus lumborum m. Diaphragm m.
Psoas abscess signs and symptoms
Back or flank pain Fever Inguinal mass Limp Anorexia Weight loss
Where is the infection in a psoas abscess?
Deep to psoas fascia
Psoas sign
Lower abdominal pain exacerbated by extending leg.
Median arcuate l. Is formed by:
Tendinous arch of the crura of the diaphragm.
Medial arcuate l. Is from:
Fascial thickening of the psoas fascia.
Lateral arcuate l. Is from:
Thickening of fascia lining the quadratus lumborum m.
Parts of the diaphragm attach where?
- Sternal part
- Costal part
- Lumbar part
Sternal part: may not be present, but attaches to xiphoid.
Costal part: attaches to inferior 6 costal cartilages.
Lumbar part: attaches to medial and lateral arcuate ligaments.
Right crus attaches where?
Left crus attaches where?
Which one is larger/longer?
R: L3-L4
L: L2-L3
Right crus
Where is the caval opening and what passes through it?
T8
IVC and right phrenic n.
Where is the esophageal hiatus and what passes through it?
T10
Esophagus and ant/post vagal trunks.
Where is the aortic hiatus and what passes through it?
T12
Aorta, thoracic duct and sometimes the azygos and hemiazygos vs.
Blood supply to the adrenal glands and where is their origin? (3)
Superior suprarenal as. - inferior phrenic as.
Middle suprarenal as. - aorta
Inferior suprarenal as. - renal a.
Innervation of the adrenal glands is from:
T6-L2
Celiac plexus and splanchnic ns.
Which muscles cover the posterior aspect of the kidney? (3)
Psoas major m.
Quadratus lumborum m.
Transversus abdominis m.
