Exam 1 - Lower leg Flashcards

1
Q

What are the muscles of the Anterior leg?

A

Tibialis anterior, Extensor digitorum longus, Extensor hallicis longus, Fibularis terius

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2
Q

What are the muscles of the Lateral leg?

A

Fibularis longus, Fibularis brevis

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3
Q

What are the muscles of the Superficial Posterior leg?

A

Gastrocnemius, Soleus, Plantaris

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4
Q

What are the muscles of the Deep Posterior leg?

A

Popliteus, Flexor hallicus longus, Flexor digitorum longus, Tibialis posterior

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5
Q

What is the origin of Tibialis anterior?

A

lateral tibial condyle and the upper lateral surface of the tibia

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6
Q

What is the insertion of Tibialis anterior?

A

medial surface of the medial cuneiform and the 1st metatarsal

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7
Q

What are the functions of Tibialis anterior?

A

dorsiflexes and inverts the foot

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8
Q

What innervates the Tibialis anterior?

A

deep fibular (peroneal) nerve

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9
Q

What supplies blood to Tibialis anterior?

A

anterior tibial a.

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10
Q

What is the origin of Extensor digitorum longus?

A

lateral condyle of the tibia, anterior surface of the fibula, lateral portion of the interosseous membrane

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11
Q

What is the insertion of Extensor digitorum longus?

A

dorsum of the lateral 4 toes via extensor expansions (central slip inserts on base of middle phalanx, lateral slips on base of distal phalanx)

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12
Q

What is the function of Extensor digitorum longus?

A

extends the metatarsophalangeal, proximal interphalangeal and distal interphalangeal joints of the lateral 4 toes

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13
Q

What innervates Extensor digitorum longus?

A

deep fibular (peroneal) nerve

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14
Q

What supplies blood to Extensor digitorum longus?

A

anterior tibial a.

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15
Q

What is the origin of Extensor hallicis longus?

A

middle half of the anterior surface of the fibula and the interosseous membrane

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16
Q

What is the insertion of Extensor hallicis longus?

A

base of the distal phalanx of the great toe

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17
Q

What are the functions of Extensor hallicis longus?

A

extends the metatarsophalangeal interphalangeal joints of the great toe

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18
Q

What innervates Extensor hallicis longus?

A

deep fibular (peroneal) nerve

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19
Q

What supplies blood to Extensor hallicis longus?

A

anterior tibial a.

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20
Q

What is the origin of Fibularis tertius?

A

distal part of the anterior surface of the fibula

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21
Q

What is the insertion of Fibularis tertius?

A

dorsum of the shaft of the 5th metatarsal bone

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22
Q

What are the functions of Fibularis tertius?

A

everts the foot

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23
Q

What innervates the Fibularis tertius?

A

deep fibular (peroneal) nerve

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24
Q

What supplies blood to Fibularis tertius?

A

anterior tibial a.

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25
Q

What is the origin of Fibularis longus?

A

upper two/thirds of the lateral surface of the fibula

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26
Q

What is the insertion of Fibularis longus?

A

after crossing the plantar surface of the foot deep to the intrinsic muscles, it inserts on the medial cuneiform and the base of the 1st metatarsal bone

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27
Q

What are the functions of Fibularis longus?

A

extends (plantar flexes) and everts the foot

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28
Q

What innervates the Fibularis longus?

A

superficial fibular (peroneal) nerve

29
Q

What supplies blood to Fibularis longus?

A

fibular (peroneal) a.

30
Q

What is the origin of Fibularis brevis?

A

lower one third of the lateral surface of the fibula

31
Q

What is the insertion of Fibularis brevis?

A

tuberosity of the base of the 5th metatarsal

32
Q

What is the function of Fibularis brevis?

A

extends (plantar flexes) and everts the foot

33
Q

What innervates Fibularis brevis?

A

superficial fibular (peroneal) nerve

34
Q

What supplies blood to Fibularis brevis?

A

fibular (peroneal) a.

35
Q

What is the origin of Gastrocnemius?

A

femur; medial head: above the medial femoral condyle; lateral head: above the lateral femoral condyle

36
Q

What is the insertion of Gastrocnemius?

A

dorsum of the calcaneus via the calcaneal (Achilles’) tendon

37
Q

What are the functions of Gastrocnemius?

A

flexes leg; plantar flexes foot

38
Q

What innervates Gastrocnemius?

A

tibial nerve

39
Q

What supplies blood to Gastrocnemius?

A

sural aa. (from the popliteal a.), posterior tibial a.

40
Q

What is the origin of Soleus?

A

posterior surface of head and upper shaft of the fibula, soleal line of the tibia

41
Q

What is the insertion of Soleus?

A

dorsum of the calcaneus via the calcaneal (Achilles’) tendon

42
Q

What are the functions of Soleus?

A

plantar flexes the foot

43
Q

What innervates Soleus?

A

tibial nerve

44
Q

What supplies blood to Soleus?

A

posterior tibial a.

45
Q

What is the origin of Plantaris?

A

above the lateral femoral condyle (above the lateral head of gastrocnemius)

46
Q

What is the insertion of Plantaris?

A

dorsum of the calcaneus medial to the calcaneal tendon

47
Q

What are the functions of Plantaris?

A

flexes the leg; plantar flexes the foot

48
Q

What innervates Plantaris?

A

tibial nerve

49
Q

What supplies blood to Plantaris?

A

popliteal a

50
Q

What is the origin of Popliteus?

A

lateral condyle of the femur

51
Q

What is the insertion of Popliteus?

A

posterior surface of the tibia above soleal line

52
Q

What are the functions of Popliteus?

A

flexes and rotates the leg medially (with the foot planted, it rotates the thigh laterally)

53
Q

What innervates Popliteus?

A

tibial nerve

54
Q

What supplies blood to Popliteus?

A

popliteal a.

55
Q

What is the origin of Flexor hallucis longus?

A

lower 2/3 of the posterior surface of the fibula

56
Q

What is the insertion of Flexor hallucis longus?

A

base of the distal phalanx of the great toe

57
Q

What are the functions of Flexor hallucis longus?

A

flexes the metatarsophalangeal and proximal interphalangeal joints of the great toe; plantar flexes the foot

58
Q

What innervates the Flexor hallucis longus?

A

tibial nerve

59
Q

What supplies blood to Flexor hallucis longus?

A

fibular (peroneal) a. and posterior tibial a.

60
Q

What is the origin of Flexor digitorum longus?

A

middle half of the posterior surface of the tibia

61
Q

What is the insertion of Flexor digitorum longus?

A

bases of the distal phalanges of digits 2-5

62
Q

What are the functions of Flexor digitorum longus?

A

flexes the metatarsophalangeal, proximal interphalangeal and distal interphalangeal joints of digits 2-5; plantar flexes the foot

63
Q

What innervates Flexor digitorum longus?

A

tibial nerve

64
Q

What supplies blood to Flexor digitorum longus?

A

posterior tibial a.

65
Q

What is the origin of Tibialis posterior?

A

interosseous membrane, posteromedial surface of the fibula, posterolateral surface of the tibia

66
Q

What is the insertion of Tibialis posterior?

A

tuberosity of the navicular and medial cuneiform, metatarsals 2-4

67
Q

What are the functions of Tibialis posterior?

A

plantar flexes the foot; inverts the foot

68
Q

What innervates Tibialis posterior?

A

tibial nerve

69
Q

What supplies blood to Tibialis posterior?

A

fibular (peroneal) a. and posterior tibial a.