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Leg Muscles
| Question | Answer |
|---|---|
| Gluteus maximus | Origin: Ilium + sacrum + coccyx Insertion: Femur + iliotibial tract Action: Thigh extender Comments: Posterior |
| Biceps femoris | Origin: ischium + femur Insertion: Fibula + tibia Action: Extends thigh/flexes leg Comments: Bone of origin |
| Gastrocnemius | Origin: Femur Insertion: Calcaneus Action: Plantar flexes foot Comments: Think posterior |
| Tibialis anterior | Origin: Tibia + interosseus membrane Insertion: Tendon of metatarsal V Action: Plantar flexion/eversion of foot Comments: Bone of origin |
| Muscles of the quadriceps femoris | - Rectus femoris - Vastus lateralis - Vastus medialis Vastus intermedius |
| Rectus femoris | Origin: Iliac spine + Acetabulum of femur Insertion: Tibia + patella Action: Extends leg/flexes thigh Comments: 1 of 4 |
| Vastus lateralis | Origin: Femoral trochanter Insertion: Tibia + patella Action: Extends leg/stabilizes knee Comments: 2 of 4 |
| Vastus medialis | Origin: Linea aspera + intertrochanteric line Insertion: Tibia + patella Action: Extends leg/stabilizes patella Comments: 3 of 4 |
| Vastus indermedius | Origin: Anterior proximal femur Insertion: Tibia + patella Action: Extends leg Comments: 4 of 4 |