Lower leg origin and insertions

Question 1

What is the origin of the tibialis anterior

Answer 1

lateral condyle and the superior half of the lateral tibia

Question 2

what is the insertion of the tibialis anterior?

Answer 2

inferomedial base of cuniform and base of the 1st metatarsal

Question 3

what is the nerve innervation of the tibialis anterior?

Answer 3

deep peroneal nerve (L4 and L5)

Question 4

what is the action of the tibialis anterior?

Answer 4

dorsiflexion and inverts

Question 5

what is the origin of the extensor hallicus longus?

Answer 5

middle portion of the anterior fibula and the interosseus membrane

Question 6

what is the insertion of the extensor hallicus longus?

Answer 6

dorsal base of the distal great toe

Question 7

what is the nerve innervation of the extensor hallicus longus?

Answer 7

deep peroneal (L5 and S1)

Question 8

what is the action of the extensor hallicus longus?

Answer 8

dorsiflexion and extends the great toe

Question 9

what is the origin of the fibularis tertius?

Answer 9

inferior 1/3 of the anterior fibula and the interosseus membrane

Question 10

what is the insertion of the fibularis tertius?

Answer 10

dorsal base of the 5th metatarsal

Question 11

what is the nerve innervation of the fibularis tertius?

Answer 11

deep peroneal (l4 and L5)

Question 12

what is the action of the fibularis tertius?

Answer 12

dorsiflexion, eversion, preception

Question 13

what is the origin of the extensor digitorum longus?

Answer 13

lateral condyle of the tibia, superior 3/4 of the medial surface of the fibula and interosseus membrane

Question 14

what is the insertion of the extensor digitorum longus?

Answer 14

middle and distal phalanges of the last 4 digits

Question 15

what is the nerve innervation of the extensor digitorum longus?

Answer 15

deep peroneal (l5 and s1)

Question 16

what is the action of the extensor digitorum longus?

Answer 16

dorsiflexion and extends digits

Question 17

What is the origin of the fibularis brevis?

Answer 17

inferior 2/3 of the lateral fibula

Question 18

what is the insertion of the fibularis brevis?

Answer 18

lateral base of the 5th metatarsal

Question 19

what is the nerve innervation of the fibularis brevis?

Answer 19

superficial peroneal (L5,S1,S2)

Question 20

what is the action of the fibularis brevis?

Answer 20

everts the foot, weak plantarflexion, preception

Question 21

what is the origin of the fibularis longus?

Answer 21

head and superolateral 2/3 of the fibula

Question 22

what is the insertion of the fibularis longus?

Answer 22

dorsal base of the 1st metatarsal, medial cuniform

Question 23

what is the nerve innervation of the fibularis longus?

Answer 23

superficial peroneal (L5, S1, S2)

Question 24

what is the action of the fibularis longus?

Answer 24

everts, weak plantarflexion, preception

Question 25

what is the origin of the plataris?

Answer 25

lateral supracondylar line of the femur and the oblique popliteal ligament

Question 26

what is the insertion of the plantaris?

Answer 26

posterior calcaneous via CT

Question 27

what is the nerve innervation of the plantaris?

Answer 27

tibial nerve (S1 and S2)

Question 28

what is the action of the plantaris?

Answer 28

weak plantarflexion

Question 29

what is the origin of the gastrocnemius?

Answer 29

medial: popliteal surface lateral: lateral surface of the lateral condyle

Question 30

what is the insertion of the gastroc?

Answer 30

posterior calcaneous via CT

Question 31

what is the nerve innervation of the gastroc?

Answer 31

tibial nerve (S1 and S2)

Question 32

what is the action of the gastroc?

Answer 32

plantarflexion when in KE and flexes the knee

Question 33

what is the origin of the soleus?

Answer 33

posterior head of the fibula, soleal line, medial border of the tibia

Question 34

what is the insertion of the soleus?

Answer 34

posterior calcanous via CT

Question 35

what is the nerve innervation of the soleus?

Answer 35

tibial nerve (S1 and S2)

Question 36

what is the action of the soleus?

Answer 36

plantarflexion when the knee is flexed

Question 37

what is the origin of the popliteus?

Answer 37

lateral surface of the lateral condyle and the lateral meniscis?

Question 38

what is the insertion of the popliteus?

Answer 38

superior soleal line and posterior surface of the tibia

Question 39

what is the nerve innervation of the popliteus?

Answer 39

tibial nerve (L4 L5 and S1)

Question 40

what is the action of the popliteus?

Answer 40

weak knee flexor, unlocks knee

Question 41

what is the origin of the FDL?

Answer 41

posteromedial tibia inferior to the soleal line

Question 42

what is the insertion of the FDL?

Answer 42

base of the distal phalanages

Question 43

what is the nerve innervation of the FDL?

Answer 43

tibial nerve (S2 and S3)

Question 44

what is the action of the FDL?

Answer 44

flexes toes, plantarflexion in KE and supports the longitundial arch

Question 45

what is the origin of the flexor hallicus longus?

Answer 45

inferior 2/3 of the posterior fibula, IO membrane

Question 46

what is the insertion of the flexor hallicus longus?

Answer 46

base of the distal phalynx of the great toe

Question 47

what is the nerve innervation of the flexor hallicus longus?

Answer 47

tibial nerve S2 and S3

Question 48

what is the action of the flexor hallicus longus?

Answer 48

flex the great toe, weak plantarflexion, support the longitundial arch.

Question 49

what is the origin of the tibialis posterior?

Answer 49

interosseus membrane, posterior tibia inferior to the soleal line, posterior fibula

Question 50

what is the insertion of the tibialis posterior?

Answer 50

tuberosity of the navicular, cuniform, cuboid and the base of the 2nd, 3rd, 4th metatarsal

Question 51

what is the innervation of the tibialis posterior?

Answer 51

tibial nerve( l4 and l5 )

Question 52

what is the action of the tibilais posterior?

Answer 52

plantarflexion and inverts the foot