Muscles CBIO2200L

Iliopsoas primary action

Flex hip and laterally rotate thigh

Iliopsoas origin

Psoas major, iliacus

Iliopsoas insertion

Lesser trochanter

Iliopsoas innervation

Femoral nerve

Piriformis primary action

abduct hip

Piriformis origin

Anterior surface of sacrum

Piriformis insertion

Greater trochanter of femur

Piriformis innervation

Spinal nerves L5

Gluteus maximus primary action

Extend hip

Gluteus maximus origin

Dorsal ilium; sacrum; coccyx

Gluteus maximus insertion

Gluteal tuberosity of femur; iliotibial tract

Gluteus maximus innervation

Inferior gluteal nerve

Gluteus medius primary action

Abduct hip

Gluteus medius origin

Superior lateral surface of ilium

Gluteus medius insertion

Greater trochanter of femur

Gluteus medius innervation

Superior gluteal nerve

Gluteus minimus primary action

Abduct hip

Gluteus minimus origin

Inferior lateral surface of ilium

Gluteus minimus insertion

Greater trochanter of femur

Gluteus minimus innervation

Superior gluteal nerve

Tensor fasciae latae primary action

Flex and abduct hip

Tensor fasciae latae origin

Anterior aspect of iliac crest

Tensor fasciae latae insertion

Iliotibial tract

Tensor fasciae latae innervation

Superior gluteal nerve

Adductor longus primary action

Adduct and flex hip

Adductor longus origin

Pubis near pubic symphysis

Adductor longus insertion

Linea aspera

Adductor longus innervation

Obturator nerve

Adductor brevis primary action

Adduct and flex hip

Adductor brevis origin

Body of pubis

Adductor brevis insertion

Linea aspera

Adductor brevis innervation

Obturator nerve

Adductor magnus primary action

Adduct and extend hip

Adductor magnus origin

ischial tuberosity

Adductor magnus insertion

Linea aspera

Adductor magnus innervation

Obturator nerve

Pectineus primary action

Adduct and flex hip

Pectineus origin

Pectineal line of pubis

Pectineus insertion

Lesser trochanter

Pectineus innervation

Femoral nerve

Gracilis primary action

Adduct hip and flex knee

Gracilis origin

Inferior ramus and body of pubis; ischial ramus

Gracilis insertion

Medial surface of tibia

Gracilis innervation

Obturator nerve

Sartorius primary action

Abduct and flex hip

Sartorius origin

Anterior superior iliac spine

Sartorius insertion

Medial aspect of proximal tibia

Sartorius innervation

Femoral nerve

Rectus femoris primary action

Extend knee

Rectus femoris origin

Anterior inferior iliac spine; superior margin of acetabulum

Rectus femoris insertion

Patella; tibial tuberosity

Rectus femoris innervation

Femoral nerve

Vastus lateralis primary action

Extend knee

Vastus lateralis origin

Greater trochanter; linea aspera

Vastus lateralis insertion

Patella; tibial tuberosity

Vastus lateralis innervation

Femoral nerve

Vastus medialis primary action

Extend knee

Vastus medialis origin

Linea aspera

Vastus medialis insertion

Patella; tibial tuberosity

Vastus medialis innervation

Femoral nerve

Vastus intermedius primary action

Extend knee

Vastus intermedius origin

Proximal femur shaft

Vastus intermedius insertion

Patella; tibial tuberosity

Vastus intermedius innervation

Femoral nerve

Biceps femoris primary action

Extend hip and flex knee

Biceps femoris origin

Ischial tuberosity; linea aspera; distal femur

Biceps femoris insertion

Fibular head; lateral condyle of tibia

Biceps femoris innervation

Sciatic nerve

Semitendinosus primary action

Extend hip and flex knee

Semitendinosus origin

Ischial tuberosity

Semitendinosus insertion

Medial, upper tibial shaft

Semitendinosus innervation

Sciatic nerve

Semimembranosus primary action

Extend hip and flex knee

Semimembranosus origin

Ischial tuberosity

Semimembranosus insertion

Medial condyle of tibia

Semimembranosus innervation

Sciatic nerve

Gastrocnemius primary action

Plantar flex foot and flex knee

Gastrocnemius origin

Medial and lateral condyles of femur

Gastrocnemius insertion

Posterior calcaneus

Gastrocnemius innervation

Tibial nerve

Soleus primary action

Plantar flex foot

Soleus origin

Superior tibia; fibula; interosseous membrane

Soleus insertion

Posterior calcaneus

Soleus innervation

Tibial nerve

Plantaris primary action

Plantar flex foot and flex knee

Plantaris origin

Posterior femur above lateral condyle

Plantaris insertion

Calcaneus or calcaneus tendon

Plantaris innervation

Tibial nerve

Tibialis anterior primary action

Dorsiflex and invert foot

Tibialis anterior origin

Lateral condyle and upper tibial shaft; interosseous membrane

Tibialis anterior insertion

Interior surface of medial cuneiform; first metatarsal bone

Tibialis anterior innervation

Deep fibular nerve

Tibialis posterior primary action

Plantar flex foot

Tibialis posterior origin

Superior tibia and fibula; interosseous membrane

Tibialis posterior insertion

Tarsal bones; metatarsals 2

Tibialis posterior innervation

Tibial nerve

Flexor digitorum longus primary action

Plantar flex foot and flex toes

Flexor digitorum longus origin

Posterior tibia

Flexor digitorum longus insertion

Distal phalanges of toes 2

Flexor digitorum longus innervation

Tibial nerve