Musculature of leg and dorsum foot

Question 1

origin and insertion of tibialis anterior

Answer 1

origin: lateral surface most of tibia and interosseous membrane
insertion: medial cuneiform and base of first metatarsal

Question 2

what is the action of tibialis anterior

Answer 2

dorsiflexes and inverts foot

Question 3

what inn tibialis anterior

Answer 3

deep fibular

Question 4

origin and insertion extensor digitorum longus

Answer 4

origin: most anterior surface of fibula and interosseous membrane
insertion: middle and distal phalanges of toes 2-5

Question 5

action of extensor digitorum longus

Answer 5

extends toes and dorsiflexes foot

Question 6

what inn extensor digitorum longus

Answer 6

deep fibular n

Question 7

origin and insertion of fibularis tertius

Answer 7

origin: distal anterior surface of fibula
insertion: base of 5th metatarsal

Question 8

action of fibularis tertius

Answer 8

aids in eversion and dorsiflexion

Question 9

what inn fibularis tertius

Answer 9

deep fibular n

Question 10

origin and insertion of extensor hallucis longus

Answer 10

origin: mid portion of fibula deep to tibialis anterior
insertion: base of distal phalanx of great toe

Question 11

action of extensor hallucis longus

Answer 11

extends great toe and dorsiflexes foot

Question 12

what inn extensor hallucis longus

Answer 12

deep fibular n

Question 13

origin and insertion of extensor digitorum brevis

Answer 13

origin: dorsal surface of calcaneus
insertion: base proximal phalanx of great toe and proximal phalanges toes 2-4

Question 14

action of extensor digitorum brevis

Answer 14

extends toes 1-4

Question 15

what inn extensor digitorum brevis

Answer 15

deep fibular n

Question 16

origin and insertion of fibularis longus

Answer 16

origin: lateral 2/3 of fibula
insertion: first metatarsal and medial cuneiform

Question 17

action of fibularis longus

Answer 17

everts and plantar flexes foot

Question 18

how does fibularis longus evert foot

Answer 18

passes underneath

Question 19

what inn fibularis longus

Answer 19

superficial fibular n

Question 20

origin and insertion of fibularis brevis

Answer 20

origin: distal lateral fibula
insertion: base of 5th metatarsal

Question 21

action of fibularis brevis

Answer 21

everts and plantar flexes foot

Question 22

what inn fibularis brevis

Answer 22

superficial fibular n

Question 23

what are the superficial mm in the posterior crural compartment

Answer 23

gastrocnemius, soleus and plantaris

Question 24

origin and insertion of gastrocnemius

Answer 24

origin: posterior surfaces of roughened area of lateral and medial femoral condyles
insertion: calcaneus

Question 25

what is the action of gastrocnemius

Answer 25

plantar flexes foot and flexes the leg

Question 26

inn of gastroc

Answer 26

tibial n

Question 27

origin and insertion of soleus

Answer 27

origin: posterior surface of head and proximal shaft fibula, soleal line on upper portion tibia insertion: calcaneus

Question 28

what is the action of soleus

Answer 28

plantar flexes foot- jumping

Question 29

what inn soleus

Answer 29

tibial n

Question 30

origin and insertion of plantaris

Answer 30

origin: posterior surface of lateral femoral condyle insertion: calcaneus

Question 31

what is the action of plantaris

Answer 31

weakly plantar flexes foot and flexes leg

Question 32

what inn plantaris

Answer 32

tibial n

Question 33

what mm are in the deep layer of posterior crural

Answer 33

popliteus, flexor digitorum longus, flexor hallucis longus, tibialis posterior

Question 34

origin and insertion of popliteus

Answer 34

origin: lateral surface of lateral condyle of femur insertion: proximal tibia above soleal line

Question 35

action of popliteus

Answer 35

flexes and medially rotates leg | when foot is fixed laterall rotates femur to unlock knee joint

Question 36

what inn popliteus

Answer 36

tibial n

Question 37

origin and insertion of flexor digitorum longus

Answer 37

origin: posterior surface mid portion tibia insertion: base of distal phalanx of 4 small toes

Question 38

what is the action of flexor digitorum longus

Answer 38

flex toes 2-5 and plantar flex foot

Question 39

what inn flexor digitorum longus

Answer 39

tibial n

Question 40

origin and insertion of flexor hallucis longus

Answer 40

origin: distal 2/3 os posterior fibula and interosseous membrane insertion: base of distal phalanx of great toe

Question 41

what is action of flexor hallucis longus

Answer 41

flexes big toe and plantar flex foot

Question 42

what inn flexor hallucis longus

Answer 42

tibial n

Question 43

origin and insertion of tibialis posterior

Answer 43

origin: posterior surface upper portion of tibia, fibula and interosseous membrane insertion: plantar surface of metatarsals 2-4, navicular, medial cuneiform and all other tarsals EXCEPT talus

Question 44

action of tibialis posterior

Answer 44

inverts and pantar flexes foot

Question 45

what inn tibialis posterior

Answer 45

tibial n