Muscles of the Lower Limb Flashcards
Sartorius
O: anterior superior iliac spine
I: medial aspect of proximal tibia
A: flexes, abducts and laterally rotates thigh
N: femoral nerve
Tensor Fasciae latae
O: anterior aspect of iliac crest, anterior superior iliac spine
I: iliotibial tract
A: steadies the knee and trunk on thigh. flexes and abducts thigh, rotates thigh medially
N: Superior gluteal nerve
Rectus Femoris
O: anterior inferior iliac spine and superior margin of acetabulum
I: patella and tibial tuberosity
A: extends knee and flexes thigh at hip
N: Femoral nerve
Vastus Lateralis
O: greater trochanter, intertrochanteric line, linea aspera
I: patella and tibial tuberosity
A: extends and stabilizes knee
N: Femoral nerve
Vastus Medialis
O: linea aspera, intertrochanteric and medial supracondylar lines
I: patella and tibial tuberosity
A: extends knee
N: femoral nerve
Gluteus Maximus
O: dorsal ilium, sacrum and coccyx
I: gluteal tuberosity of femur, iliotibial tract
A: major extensor of thigh
N: inferior gluteal nerve
Biceps Femoris
O: ischial tuberosity, linea aspera, distal femur
I: head of fibula and lateral condyle of tibia
A: extends thigh and flexes knee
N: Sciatic Nerve
Semimembranosus
O: ischial tuberosity
I: medial condyle of tibia
A: extends thigh and flexes knee
N: Sciatic Nerve
Semitendonosus
O: ischial tuberosity
I: medial aspect of upper tibial shaft
A: extends thigh and flexes knee
N: sciatic nerve
Tibialis Anterior
O: lateral condyle of tibial shaft
I: inferior surface of medial cuneiform and first metatarsal bone
A: prime mover of dorsiflexion
N: Deep fibular nerve
Gastrocnemius
O: 2 heads from medial and lateral condyles of femur
I: posterior calcaneus
A: plantar flexes foot
N: Tibial Nerve
Soleus
O: superior tibia, fibula and interosseous membrane
I: posterior calcaneus
A: Plantar flexes foot
N: Tibial nerve
