Psoas Major
Psoas Major
☆psoas major
MusclePro
Anatomy
- Origin
Bases of transverse processes of all lumbar vertebrae, bodies of twelfth thoracic and all lumbar vertebrae, intervertebral disks above each lumbar vertebra
- Insertion
Lesser trochanter of femur
- Nerve
Branches from lumbar plexus (L2, L3) and sometimes L1 or L4
- Actions
Flexes thigh on the trunk, flexes vertebral column, keeps the lumbar curve in the spine
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