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Anatomy Lower extremity > Lower leg origin and insertions > Flashcards

Lower leg origin and insertions Flashcards

1
Q

What is the origin of the tibialis anterior

A

lateral condyle and the superior half of the lateral tibia

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2
Q

what is the insertion of the tibialis anterior?

A

inferomedial base of cuniform and base of the 1st metatarsal

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3
Q

what is the nerve innervation of the tibialis anterior?

A

deep peroneal nerve (L4 and L5)

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4
Q

what is the action of the tibialis anterior?

A

dorsiflexion and inverts

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5
Q

what is the origin of the extensor hallicus longus?

A

middle portion of the anterior fibula and the interosseus membrane

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6
Q

what is the insertion of the extensor hallicus longus?

A

dorsal base of the distal great toe

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7
Q

what is the nerve innervation of the extensor hallicus longus?

A

deep peroneal (L5 and S1)

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8
Q

what is the action of the extensor hallicus longus?

A

dorsiflexion and extends the great toe

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9
Q

what is the origin of the fibularis tertius?

A

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

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10
Q

what is the insertion of the fibularis tertius?

A

dorsal base of the 5th metatarsal

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11
Q

what is the nerve innervation of the fibularis tertius?

A

deep peroneal (l4 and L5)

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12
Q

what is the action of the fibularis tertius?

A

dorsiflexion, eversion, preception

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13
Q

what is the origin of the extensor digitorum longus?

A

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

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14
Q

what is the insertion of the extensor digitorum longus?

A

middle and distal phalanges of the last 4 digits

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15
Q

what is the nerve innervation of the extensor digitorum longus?

A

deep peroneal (l5 and s1)

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16
Q

what is the action of the extensor digitorum longus?

A

dorsiflexion and extends digits

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17
Q

What is the origin of the fibularis brevis?

A

inferior 2/3 of the lateral fibula

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18
Q

what is the insertion of the fibularis brevis?

A

lateral base of the 5th metatarsal

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19
Q

what is the nerve innervation of the fibularis brevis?

A

superficial peroneal (L5,S1,S2)

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20
Q

what is the action of the fibularis brevis?

A

everts the foot, weak plantarflexion, preception

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21
Q

what is the origin of the fibularis longus?

A

head and superolateral 2/3 of the fibula

22
Q

what is the insertion of the fibularis longus?

A

dorsal base of the 1st metatarsal, medial cuniform

23
Q

what is the nerve innervation of the fibularis longus?

A

superficial peroneal (L5, S1, S2)

24
Q

what is the action of the fibularis longus?

A

everts, weak plantarflexion, preception

25
Q

what is the origin of the plataris?

A

lateral supracondylar line of the femur and the oblique popliteal ligament

26
Q

what is the insertion of the plantaris?

A

posterior calcaneous via CT

27
Q

what is the nerve innervation of the plantaris?

A

tibial nerve (S1 and S2)

28
Q

what is the action of the plantaris?

A

weak plantarflexion

29
Q

what is the origin of the gastrocnemius?

A

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

30
Q

what is the insertion of the gastroc?

A

posterior calcaneous via CT

31
Q

what is the nerve innervation of the gastroc?

A

tibial nerve (S1 and S2)

32
Q

what is the action of the gastroc?

A

plantarflexion when in KE and flexes the knee

33
Q

what is the origin of the soleus?

A

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

34
Q

what is the insertion of the soleus?

A

posterior calcanous via CT

35
Q

what is the nerve innervation of the soleus?

A

tibial nerve (S1 and S2)

36
Q

what is the action of the soleus?

A

plantarflexion when the knee is flexed

37
Q

what is the origin of the popliteus?

A

lateral surface of the lateral condyle and the lateral meniscis?

38
Q

what is the insertion of the popliteus?

A

superior soleal line and posterior surface of the tibia

39
Q

what is the nerve innervation of the popliteus?

A

tibial nerve (L4 L5 and S1)

40
Q

what is the action of the popliteus?

A

weak knee flexor, unlocks knee

41
Q

what is the origin of the FDL?

A

posteromedial tibia inferior to the soleal line

42
Q

what is the insertion of the FDL?

A

base of the distal phalanages

43
Q

what is the nerve innervation of the FDL?

A

tibial nerve (S2 and S3)

44
Q

what is the action of the FDL?

A

flexes toes, plantarflexion in KE and supports the longitundial arch

45
Q

what is the origin of the flexor hallicus longus?

A

inferior 2/3 of the posterior fibula, IO membrane

46
Q

what is the insertion of the flexor hallicus longus?

A

base of the distal phalynx of the great toe

47
Q

what is the nerve innervation of the flexor hallicus longus?

A

tibial nerve S2 and S3

48
Q

what is the action of the flexor hallicus longus?

A

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

49
Q

what is the origin of the tibialis posterior?

A

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

50
Q

what is the insertion of the tibialis posterior?

A

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

51
Q

what is the innervation of the tibialis posterior?

A

tibial nerve( l4 and l5 )

52
Q

what is the action of the tibilais posterior?

A

plantarflexion and inverts the foot

Anatomy Lower extremity (5 decks)

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