Hip + Leg + Foot muscles

Question 1

gluteus maximus action? origin and insertion?

Answer 1

action = extend and laterally rotate thigh
origin = liliac crest, sacrum, coccyx
insertion = tensor fascia latae and femur

Question 2

gluteus medius action? origin and insertion?

Answer 2

action = abduct and medially rotate thigh
origin = iliac crest
insertion = greatest trochanter of femur

Question 3

illiacus action?

Answer 3

flexes thigh

Question 4

iliopsoas action?

Answer 4

flexes thigh

Question 5

obturator internum action?

Answer 5

laterally rotates thigh

Question 6

piriformis action?

Answer 6

laterally rotates thigh

Question 7

psoas major action? origin and insertion?

Answer 7

action = flexes thigh
origin = T12-L5 vertebrae
insertion = lesser trochanter of femur

Question 8

tensor fascia latae action?

Answer 8

abducts and medially rotates thigh

Question 9

adductor brevis action? origin and insertion?

Answer 9

action = adducts and flexes thigh
origin = pubis
insertion = linea aspera of femur

Question 10

adductor longus action? origin and insertion?

Answer 10

action = adducts and flexes thigh
origin = pubis
insertion = linea aspera of femur

Question 11

adductor magnus action? origin and insertion?

Answer 11

action = adducts, flexes, extends and laterally rotates thigh
origin = pubis and ischial tuberosity
insertion = linea aspera of femur

Question 12

gracilis action? origin and insertion?

Answer 12

action = adducts and flexes thigh
origin = pubis
insertion = tibia

Question 13

pectineus action?

Answer 13

adducts and flexes thigh

Question 14

vastus intermedius action? origin and insertion?

Answer 14

action = extends leg
origin = femur
insertion = quadriceps tendon

Question 15

vastus lateralis action? origin and insertion?

Answer 15

action = extends leg
origin = femur
insertion = quadriceps tendon

Question 16

vastus medialis action? origin and insertion?

Answer 16

action = extends leg
origin = femur
insertion = quadriceps tendon

Question 17

rectus femoris action? origin and insertion?

Answer 17

action = extends leg and flexes thigh
origin = iliac spine
insertion = quadriceps tendon

Question 18

sartoris action? origin and insertion?

Answer 18

action = flexes and rotates thigh laterally, flexes and rotates leg medially
origin = iliac spine
insertion = tibial tuberosity

Question 19

biceps femoris (long head) action? origin and insertion?

Answer 19

action = extends thigh and flexes leg
origin = ischium
insertion = fibula

Question 20

biceps femoris (short head) action? origin and insertion?

Answer 20

action = flex leg
origin = femur
insertion = fibula

Question 21

semimembranosus action? origin and insertion?

Answer 21

action = extends thigh and flexes leg
origin = ischium
insertion = tibia

Question 22

semitendinosus action? origin and insertion?

Answer 22

action = extends thigh and flexes leg
origin = ischium
insertion = tibia

Question 23

extensor digitorum longus of foot action?

Answer 23

dorsiflexion of foot and extension of digits 2-5

Question 24

extensor hallucis longus action?

Answer 24

dorsiflexion of foot and extension of digit 1 (big toe)

Question 25

tibialis anterior action?

Answer 25

dorsiflexion and inversion of the foot

Question 26

peroneus (fibularis) brevis action?

Answer 26

foot eversion

Question 27

peroneus (fibularis) longus action?

Answer 27

foot eversion

Question 28

flexor digitorum longus action?

Answer 28

plantar flexion of foot and flexion of digits 2-5

Question 29

flexor hallucis longus action?

Answer 29

plantar flexion of foot and flexion of digit 1 (big toe)

Question 30

gastrocnemius (lateral/great head) action? origin and insertion?

Answer 30

action = flexes leg and plantar flexion of foot origin = femur insertion = calcaneal tendon

Question 31

gastrocnemius (medial head) action? origin and insertion?

Answer 31

action = flexes leg and plantar flexion of foot origin = femur insertion = calcaneal tendon

Question 32

popliteus action?

Answer 32

flexes leg

Question 33

soleus action? origin and insertion?

Answer 33

action = plantar flexion of foot origin = fibula and tibia insertion = calcaneal tendon

Question 34

tibialis posterior action?

Answer 34

plantar flexion and foot eversion

Question 35

extensor digitorum brevis of foot action?

Answer 35

extends digits 2-4

Question 36

extensor hallucis brevis action?

Answer 36

extends digit 1 (big toe)

Question 37

flexor digiti minimi brevis action?

Answer 37

flexes digit 5 (pinky toe)

Question 38

flexor digitorum brevis action?

Answer 38

flexes digits 2-5

Question 39

flexor hallucis brevis action?

Answer 39

flexes digit 1 (big toe)

Question 40

abductor hallucis action?

Answer 40

abducts digit 1 (big toe)

Question 41

abductor digiti minimi action?

Answer 41

abducts digit 5 (pinky toe)