Muscle Atlas


Origin: Anterior surfaces and lower borders of transverse processes of L1 - L5 and bodies and discs of T12 - L5
Insertion: Lesser trochanter
Action: Flex the torso and thigh with respect to each other
Innervation: Direct fibers of L1 - L3 of lumbar plexus
Arterial Supply: Lumbar branch of iliopsoas branch of internal iliac artery

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