Lumbar anatomy

                 
Iliacus: part of ilipsoas; flexes thigh at hip joint; femoral nerve (L2, L3)

                 
Psoas major: part of ilipsoas that flexes thigh at hip joint and flexes vertebral column

                 
Transversus abdominis

                 
Quadratus lumborum

                 
Multifidus

                 
Iliocostalis lumborum

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