| Term | Definition |
|---|
| gluteus maximus action | extends and rotates thigh laterally |
| gluteus maximus origin | ilium |
| gluteus maximus insertion | gluteal tuberosity of femur |
| gracilis action | adducts thigh; flexes and rotates leg inward at the knee |
| gracilis origin | symphysis pubis |
| gracilis insertion | tibia |
| sartorius action | flexes legs and thigh,abducts thigh, rotates thigh laterally, and rotates leg medially |
| sartorius origin | ilium |
| sartorius insertion | medial surface of tibia |
| adductor longus action | adduction, flexion, and medial rotation at hip |
| adductor longus origin | inferior ramus of pubis |
| adductor longus insertion | linea aspera of femur |
| adductor magnus action | adduction at hip, flexion & medial rotation, extension & lateral rotation |
| adductor magnus origin | inferior ramus of pubis |
| adductor magnus insertion | linea aspera of femur & adductor tubercle (femur) |
| tensor fasciae latae action | abdcts thigh |
| tensor fasciae latae origin | ilium and iliac crest |
| tensor fasciae latae insertion | tibia, by iliotibial tract |
| rectus femoris (quadriceps femoris) action | extends leg at knee |
| rectus femoris (quadriceps femoris) origin | ilium |
| rectus femoris (quadriceps femoris) insertion | patellar tendon to tibial tuberosity of tibia |
| vastus lateralis (quadriceps femoris) action | extends leg at knee |
| vastus lateralis (quadriceps femoris) origin | greater trochanter, linea aspera of femur |
| vastus lateralis (quadriceps femoris) insertion | patellar tendon to tibial tuberosity of tibia |
| vastus medialis (quadriceps femoris) action | extends leg at knee |
| vastus medialis (quadriceps femoris) origin | linea aspera of femur |
| vastus medialis (quadriceps femoris) insertion | patellar tendon to tibial tuberosity of tibia |
| vastus intermedius (quadriceps femoris) action | extends leg at knee |
| vastus intermedius (quadriceps femoris) origin | anterior and lateral surfaces of femur |
| vastus intermedius (quadriceps femoris) insertion | patellar tendon to tibial tuberosity of tibia |
| biceps femoris action | flexes leg and extends thigh |
| biceps femoris origin | ischial tuberosity of ischium and linea aspera of femur |
| biceps femoris insertion | fibula and tibia |
| semimembranosus action | flexion at knee, extension and medial rotation at hip |
| semimembranosus origin | ischial tuberosity |
| semimembranosus insertion | posterior, medial condyle of tibia |
| semitendinosus action | flexes leg and extends thigh |
| semitendinosus origin | ischial tuberosity of ischium |
| semitendinosus insertion | tibia |
| gastrocnemius action | plantar flexes foot (extends foot); flexes knee |
| gastrocnemius origin | femur |
| gastrocnemius insertion | calcaneus |
| soleus action | plantar flexes foot (extends foot) |
| soleus origin | fibula and tibia |
| soleus insertion | calcaneus |
| tibialis anterior action | dorsiflexion and inversion of foot |
| tibialis anterior origin | tibia |
| tibialis anterior insertion | tarsal and first metatarsal bones |
| extensor digitorum longus action | extends toes; dorsiflexes foot |
| extensor digitorum longus origin | tibia and fibula |
| extensor digitorum longus insertion | phalanges (2-5) |
| fibularis longus (peroneus longus) action | plantar flexes and everts foot |
| fibularis longus (peroneus longus) origin | tibia and fibula |
| fibularis longus (peroneus longus) insertion | first metatarsal, medial cuneiform |
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