A&p Muscles Origin/insertion/action Leg

Front 1

iliacus origin

Back 1

iliac fossa

Front 2

iliacus insertion

Back 2

lesser trochanter of femur, along with psoas major

Front 3

iliacus action

Back 3

flexes at the hip joint; flexes joints of vertebral column

Front 4

psoas major origin

Back 4

transverse process of lumbar vertebrae

Front 5

psoas major insertion

Back 5

lesser trochanter of femur, along with iliacus

Front 6

psoas major action

Back 6

flexes at the hip joint; flexes joints of vertebral column

Front 7

gluteus maximus origin

Back 7

iliac crest, sacrum, coccyx, aponeurosis of lumbar region

Front 8

gluteus maximus insertion

Back 8

gluteal tuberosity and iliotibial tract

Front 9

gluteus maximus action

Back 9

extends and rotates thigh laterally at the hip joint

Front 10

gracilis origin

Back 10

inferior edge of symphysis pubis

Front 11

gracilis insertion

Back 11

proximomedial surface of tibia

Front 12

gracilis action

Back 12

adducts thigh at hip joint; flexes leg at knee joint

Front 13

adductor longus origin

Back 13

pubis-below pubic crest

Front 14

adductor longus insertion

Back 14

linea aspera of femur

Front 15

adductor longus action

Back 15

adducts thigh at hip joint

Front 16

adductor brevis origin

Back 16

inferior ramus of pubis

Front 17

adductor brevis insertion

Back 17

linea aspera of femur

Front 18

adductor brevis action

Back 18

adducts thigh at hip joint

Front 19

adductor magnus origin

Back 19

inferior ramus of ischium and inferior ramus of pubis

Front 20

adductor magnus insertion

Back 20

linea aspera and medial epicondyle of femur

Front 21

adductor magnus action

Back 21

adducts thigh at hip joint

Front 22

sartorius origin

Back 22

anterior superior iliac spine

Front 23

sartorius insertion

Back 23

medial surface of tibia

Front 24

sartorius action

Back 24

flexes leg and thigh; abducts rotates thigh laterally

Front 25

rectus femoris origin

Back 25

anterior inferior iliac spine

Front 26

vastus lateralis origin

Back 26

inferior to greater trochanter and linea aspera of femur

Front 27

vastus medialis origin

Back 27

medial surface and linea aspera of femur

Front 28

vastus intermedius origin

Back 28

anterior and lateral surfaces of femur

Front 29

semitendinosus origin

Back 29

ischial tuberosity

Front 30

semitendinosus insertion

Back 30

proximomedial surface of tibia

Front 31

semitendinosus action

Back 31

extends thigh at hip joint; flexes leg at knee joint

Front 32

semimembranosus origin

Back 32

ischial tuberosity

Front 33

semimembranosus insertion

Back 33

proximomedial surface of tibia

Front 34

semimembranosus action

Back 34

extends thigh at hip joint; flexes leg at knee point

Front 35

tibialis anterior origin

Back 35

lateral condyle and body of tibia

Front 36

tibialis anterior insertion

Back 36

first metatarsal bone and first cuneiform bone

Front 37

tibialis anterior action

Back 37

dorsiflexes ankle; inverts foot and ankle

Front 38

extensor digitorum longus origin

Back 38

lateral condyle of tibia and anterior surface of fibula

Front 39

extensor digitorum longus insertion

Back 39

extensor expansions of digits

Front 40

extensor digitorum longus action

Back 40

extends digits; dorsiflexes foot at ankle

Front 41

extensor hallucis longus origin

Back 41

anterior surface of fibula and interosseous ligament

Front 42

extensor hallucis longus insertion

Back 42

distal phalanx

Front 43

extensor hallucis longus action

Back 43

extends joints of big toe; assists dorsiflexion of foot at ankle

Front 44

fibularis longus origin

Back 44

lateral condyle of tibia and head and shaft of fibula

Front 45

fibularis longus insertion

Back 45

first cuneiform and metatarsal bone

Front 46

fibularis longus action

Back 46

plantar flexes and everts foot at ankle

Front 47

fibularis brevis origin

Back 47

lower aspect of fibula

Front 48

fibularis brevis insertion

Back 48

metatarsal bone

Front 49

fibularis brevis action

Back 49

plantar flexes and everts foot at ankle

Front 50

gastrocnemius origin

Back 50

lateral and medial condyle of femur

Front 51

gastrocnemius insertion

Back 51

posterior surface of calcaneous via calcaneal tendon

Front 52

gastrocnemius action

Back 52

plantar flexes foot at ankle; flexes knee joint

Front 53

soleus origin

Back 53

posterior aspect of fibula and tibia

Front 54

soleus insertion

Back 54

calcaneous via calcaneal tendon

Front 55

soleus action

Back 55

plantar flexes foot at ankle

Front 56

flexor hallucis longus origin

Back 56

posterior surface of tibia

Front 57

flexor hallucis longus insertion

Back 57

distal phalanx of big toe

Front 58

flexor hallucis longus action

Back 58

flexes joint of great toe and plantar flexes foot

Front 59

flexor digitorum longus origin

Back 59

posterior surface of tibia

Front 60

flexor digitorum longus insertion

Back 60

distal phalanges of digits

Front 61

flexor digitorum longus action

Back 61

flexes joints of digits and plantar flexes foot