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Posterior Ab Wall
Muscles of the Posterior Abdominal Wall
Question | Answer |
---|---|
Psoas major origin | transverse processes of lumbar vertebrae |
Psoas major insertion | lesser trochanter of femur |
Iliacus origin | lateral of inferior portion of psoas major |
Iliacus insertion | iliac fossa, lesser trochanter of femur and joins with psoas tendon |
Quadratus lumborum origin | transverse processes of lumbar vertebra and 12th rib |
Quadratus lumborum insertion | iliolumbar ligament and iliac crest |
Psoas major innervation | lumbar plexus |
Iliacus innervation | femoral nerve |
Quadratus lumborum innervation | ventral branches of T12-L4 |
Psoas major action | flexion of thigh, lateral flexor of vertebral column |
Iliacus action | flexion of thigh, stabilization of hip joint |
Quadratus lumborum action | extensor of vertebral column, lateral flexor of vertebral column |