Leg & Foot Muscles

Question 1

Extensor digitorum longus attachments

Answer 1

Lateral tibial condyle
Proximal 3/4 of fibula and crucial interosseous membrane
Dorsal digital expansions of toes 2-5

Question 2

Extensor digitorum longus actions

Answer 2

Dorsiflexes ankle

Extends digits 2-5 (IP & MP)

Question 3

Extensor digitorum longus innervation

Answer 3

Deep fibular n. (L4-S1)

Question 4

Extensor hallucinations longus attachments

Answer 4

Middle 1/2 of fibular surface & crural interosseous membrane
Distal phalangeal base of 1st toe

Question 5

Extensor hallucinations longus action

Answer 5

Dorsiflexes ankle

Extends great toe

Question 6

Extensor hallucis longus innervation

Answer 6

Deep fibular n. (L4-S1)

Question 7

Fibularis (peroneus) tertius attachment

Answer 7

Distal fibula & crural interosseous membrane

Base of the 5th metatarsal

Question 8

Fibularis (peroneus) tertius action

Answer 8

Dorsiflexes ankle

Everts foot

Question 9

Fibularis (peroneus) tertius innervation

Answer 9

Deep fibular n. (L4-S1)

Question 10

Tibialis anterior attachments

Answer 10

Lateral condyle and proximal 2/3 lateral tibia & crural interosseous membrane
Medial cuneiform & adjacent 1st metatarsal

Question 11

Tibialis anterior action

Answer 11

Dorsiflexes ankle

Inverts foot

Question 12

Tibialis anterior innervation

Answer 12

Deep fibular n. (L4-S1)

Question 13

Fibularis (peroneous) longus attach

Answer 13

Head & proximal 2/3 fibula

Lateral aspect of 1st metatarsal & adjacent medial cuneiform

Question 14

Fibularis longus action

Answer 14

Everts foot, plantar flexes ankle

Depresses 1st metatarsal head

Question 15

Fibularis longus innervation

Answer 15

Superficial fibular n. (L4-S1)

Question 16

Fibularis (peroneus) brevis attachments

Answer 16

Distal 2/3 fibula

Lateral base of 5th metatarsal

Question 17

Fibularis (peroneus) brevis action

Answer 17

Everts foot

Plantar flexes ankle

Question 18

Fibularis (peroneus) brevis innervation

Answer 18

Superficial fibular n. (L4-S1)

Question 19

Flexor digitorum longus attachment

Answer 19

Posterior tibia (distal to soleal line) 
Plantar surface of distal phalangeal bases

Question 20

Flexor digitorum longus action

Answer 20

Plantar flexes ankle

Flexes digits 2-5 (MP & IP)

Question 21

Flexor digitorum longus innervation

Answer 21

Tibial n. (L5-S1)

Question 22

Flexor hallucis longus attachments

Answer 22

Distal 2/3 posterior fibular surface & crural interosseous membrane to plantar aspect of distal phalangeal base of 1st toe

Question 23

Flexor hallucis longus action

Answer 23

Plantar flexes ankle

Flexes great toe

Question 24

Flexor hallucis longus innervation

Answer 24

Tibial n. (L5-S2)

Question 25

Gastrocnemius attachment

Answer 25

Posterior aspect of femoral condyles and joint capsule | Posterior calcaneal surface

Question 26

Gastrocnemius action

Answer 26

Flexes knee | Plantar flexes ankle

Question 27

Gastrocnemius innervation

Answer 27

Tibial n. (S1-2)

Question 28

Plantaris attach

Answer 28

Lateral supracondylar line to the posterior calcaneal surface

Question 29

Plantaris action

Answer 29

Flexes knee | Plantar flexes ankle

Question 30

Plantaris innervation

Answer 30

Tibial n. (L4-S1)

Question 31

Popliteus attach

Answer 31

Lateral femoral condyle and oblique popliteal lig. | Soleal line of tibia

Question 32

Popliteus action

Answer 32

(Unfixed) Medial rotation of tibia, knee extension (Fixed) Lateral rotation of femur, knee flexion Thus: unlocks the knee from extension into early flex

Question 33

Popliteus innervation

Answer 33

Tibial n. (L4-S1)

Question 34

Soleus attach

Answer 34

Posterior aspect of head & proximal 1/4 fibula & tibial soleal line Posterior calcaneal surface

Question 35

Soleus action

Answer 35

Plantar flexes foot at ankle joint

Question 36

Soleus innervation

Answer 36

Tibial n. (L5-S2)

Question 37

Tibialis posterior attach

Answer 37

Crural interosseous membrane, lateral tibial surface & medial fibular surface to the navicular, medial & interosseous cuneiforms and bases of metatarsals 2-4

Question 38

Tibialis posterior actions

Answer 38

Inverts foot and plantar flexes ankle

Question 39

Tibialis posterior innervation

Answer 39

Tibial n. (L4-S1)