front 1 sartorius | back 1 O: ASIS I: upper part of medial surface of shaft of tibia A: Flexes, abducts, external rotation of femur; slight internal
rotation of leg at the knee joint N: femoral nerve |
front 2 rectus femoris | back 2 O: AIIS I: tibial tuberosity via patellar tendon A: flexes thigh, extends leg N: femoral nerve |
front 3 vastus lateralis | back 3 O: intertrochanteric line I: tibial tuberosity via patellar tendon A: extends leg N: femoral nerve |
front 4 vastus medialis | back 4 O: intertrochanteric line I: tibial tuberosity via patellar tendon A: extends leg N: femoral nerve |
front 5 vastus intermedius | back 5 O: anterior and lateral 2/3 of femur I: tibial tuberosity via patellar tendon A: extends leg N: femoral nerve |
front 6 gracilis | back 6 O: pubic ramus I: upper, medial shaft of tibia A: adducts thigh N: obturator nerve |
front 7 pectineus | back 7 O: superior ramus of pubis I: lesser trochanter A: flexes thigh, assists in adduction when hip flexed N: femoral nerve |
front 8 adductor longus | back 8 O: anterior pubis I: linea aspera A: adducts thigh, assists with medial rotation N: obturator nerve |
front 9 adductor brevis | back 9 O: inferior ramus of pubis I: linea aspera A: adducts thigh N: obturator nerve |
front 10 adductor magnus | back 10 O: inferior ramus of pubis I: linea aspera, adductor tubercle of femur A: adducts and extends thigh N: obturator nerve |
front 11 biceps femoris | back 11 O: long head- ischial tuberosity short head- linea aspera I: head of fibula A: flexes knee and long head- extends thigh N: long head- tibial nerve short head- common peroneal nerve |
front 12 semitendinosus | back 12 O: ischial tuberosity I: medial, superior tibia A: flexes knee, extends thigh N: tibial nerve |
front 13 semimembranosus | back 13 O: ischial tuberosity I: posterior, superior tibia A: flexes knee, extends thigh N: tibial nerve |