RECTUS FEMORIS
| ORIGIN Straight head: anterior inferior iliac spine. Reflected head: ilium above acetabulum |
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| INSERTION Quadriceps tendon to patella , via ligamentum patellae into tubercle of tibia |
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| ACTION Extends leg at knee. Flexes thigh at hip |
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| NERVE Posterior division of femoral nerve (L3, 4) |