Diagnostic Ultrasound - Abdomen and Pelvis

Abdominal Wall
Anatomy: Abdomen
POSTERIOR ABDOMINAL WALL
Central tendon (of
diaphragm)
Median arcuate ligament
arches
Esophagus
Right crus of diaphragm
Oblique & transverse
muscles
Right crus of diaphragm
Medial arcuate ligament
Lateral arcuate ligament
Left crus of diaphragm
Quadratus lumborum
muscle
Psoas minor muscle
Anterior longitudinal
ligament
Psoas major muscle
Iliacus muscle
Levator ani muscle
Rectum
Piriformis muscle
Inguinal ligament
Urethra
Insertion of iliopsoas
muscle
Graphic shows the lumbar vertebrae are covered and attached by the anterior longitudinal ligament, and the diaphragmatic crura are
closely attached to it, as are the origins of the psoas muscles, which also arise from the transverse processes. Iliacus muscle arises from
the iliac fossa of the pelvis and inserts into the tendon of the psoas major, constituting the iliopsoas muscle, which inserts onto the
lesser trochanter. Quadratus lumborum arises from the iliac crest and inserts onto the 12th rib and transverse processes of the lumbar
vertebrae. Diaphragmatic and transverse abdominal fibers interlace. Psoas and quadratus lumborum pass behind the diaphragm under
medial and lateral arcuate ligaments.
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