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Anatomy > 18: Musculo-neuro-vascular systems of lateral leg and foot > Flashcards

18: Musculo-neuro-vascular systems of lateral leg and foot Flashcards

1
Q

Muscles of lateral compartment of the leg

A

Fibularis longus
Fibularis brevis

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2
Q

Innervation of lateral compartment of the leg

A

Superficial fibular nerve

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3
Q

Actions of lateral compartment of the leg

A

Everts foot
Active during plantar flexion

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4
Q

Blood supply of lateral compartment of the leg

A

No major vessels

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5
Q

Origin of fibularis longus

A

Head + superior 2/3 of lateral surface of fibula

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6
Q

Insertion of fibularis longus

A

Base of first metatarsal
Medial cuneiform

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7
Q

innervation of fibularis longus

A

Superficial fibular nerve

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8
Q

Action of fibularis longus

A

Eversion of foot
Weak ankle plantarflexion

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9
Q

Course of tendon of fibularis longus

A

Crosses sole of foot and inserts onto the base of the first metatarsal + medial cuneiform

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10
Q

Function of tendon of fibularis longus

A

Supports arches of the foot

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11
Q

Origin of fibularis brevis

A

Lower 2/3 of lat. surface of fibula

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12
Q

Insertion of fibularis brevis

A

Dorsal surface of tuberosity on lateral side of base of 5th metatarsal

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13
Q

Innervation of fibularis brevis

A

Superficial fibular nerve

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14
Q

Action of fibularis brevis

A

Eversion of foot
Weak ankle plantarflexion

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15
Q

What supplies lateral compartment of leg

A

Superficial fibular nerve

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16
Q

Other name for ankle joint

A

Talocrural joint

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17
Q

Superficial fibular nerve supplies what cutaneously

A

Distal inferior surface of leg
Dorsal of foot

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18
Q

Intrinsic muscles of the foot are important in…

A

propulsion of foot
adjustment to uneven ground
fixing foot to maintain balance

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19
Q

Muscles of sole are supplied by…

A

medial and lateral plantar nerves and arteries

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20
Q

How many layers of plantar muscles are there

A

4

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21
Q

Plantar muscles in layer 1:

A

Abductor hallucis
Flexor digitorum brevis
Abductor digiti minimi

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22
Q

Origin of Abductor hallucis

A

medial tubercle of tuberosity of calcaneus
flexor retinaculum
plantar aponeurosis

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23
Q

Insertion of Abductor hallucis

A

medial side of base of proximal phalanx of big toe

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24
Q

Innervation of Abductor hallucis

A

medial plantar nerve

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25
Q

Action of Abductor hallucis

A

abducts and flexes big toe

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26
Q

Origin of Flexor digitorum brevis

A

medial tubercle of tuberosity of calcaneus
flexor retinaculum
plantar aponeurosis

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27
Q

Insertion of Flexor digitorum brevis

A

both sides of middle phalanges of digits 2-5

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28
Q

Innervation of Flexor digitorum brevis

A

medial plantar nerve

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29
Q

Action of Flexor digitorum brevis

A

flexes lateral 4 digits

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30
Q

Origin of Abductor digiti minimi

A

medial and lateral tubercles of tuberosity of calcaneus
plantar aponeurosis
intermuscular septa

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31
Q

Insertion of Abductor digiti minimi

A

lateral side of base of proximal phalanx of digit 5

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32
Q

Innervation of Abductor digiti minimi

A

lateral plantar nerve

33
Q

Action of Abductor digiti minimi

A

abducts and flexes little toe

34
Q

Plantar muscles in layer 2

A

Quadratus plantae
Lumbricals

35
Q

Origin of Quadratus plantae

A

medial surface and lateral margin of plantar surface of calcaneus

36
Q

Insertion of Quadratus plantae

A

posterolateral margin of tendon of flexor digitorum longus

37
Q

Innervation of Quadratus plantae

A

lateral plantar nerve

38
Q

Action of Quadratus plantae

A

assists FDL in flexing toes 2-5

39
Q

Origin of Lumbricals

A

tendons of FDL

40
Q

Insertion of Lumbricals

A

medial part of expansion over digits 2-5

41
Q

Innervation of Lumbricals

A

1st = medial plantar nerve
2nd = lateral plantar nerve

42
Q

Actions of lumbricals

A

flexes proximal phalanges
extends middle and distal phalanges of digits 2-5

43
Q

Plantar muscles in layer 3

A

flexor hallucis brevis
adductor hallucis
flexor digiti minimi brevis

44
Q

Origin of flexor hallucis brevis

A

plantar surface of cuboid and lateral cuneiforms

45
Q

Innervation of flexor hallucis brevis

A

medial plantar nerve

46
Q

Action of flexor hallucis brevis

A

flexes prox. phalanx of big toe

47
Q

Insertion of flexor hallucis brevis

A

base of prox. phalanx of big toe

48
Q

what does the flexor hallucis brevis tendon contain

A

2 sesamoid bones

49
Q

Origin of oblique head of adductor hallucis

A

bases of metatarsals 2-4

50
Q

Origin of transverse head of of adductor hallucis

A

plantar ligaments of MTP joints

51
Q

Insertion of adductor hallucis

A

lat. side of base of prox. phalanx of big toe

52
Q

Innervation of adductor hallucis

A

deep branch of lat. plantar nerve

53
Q

Action of adductor hallucis

A

adducts big toe
assists in transverse arch by pulling metatarsals medially

54
Q

Action of flexor digiti minimi brevis

A

flexes proximal phalanx of little toe

55
Q

Origin of flexor digiti minimi brevis

A

base of metatarsal 5v

56
Q

Insertion of flexor digiti minimi brevis

A

base of prox. phalanx 5

57
Q

Innervation of flexor digiti minimi brevis

A

superficial branch of lateral plantar nerve

58
Q

Action of plantar interossei PAD

A

adducts toes 3-5 and flexes MTP joints

59
Q

Origin of plantar interossei

A

plantar aspect of medial sides of metatarsals 3-5

60
Q

Insertion of plantar interossei

A

medial sides of bases of prox. phalanges 3-5v

61
Q

Innervation of plantar interossei

A

lateral plantar nerve

62
Q

Plantar muscles of layer 4

A

Plantar interossei + Dorsal interossei

63
Q

Origin of dorsal interossei

A

adjacent sides of metatarsals 1-5

64
Q

Insertion of dorsal interossei

A

1st - medial side of prox. phalanx of 2nd digit
2nd - lateral side of digit 2-4

65
Q

Innervation of dorsal interossei

A

lateral plantar nerve

66
Q

Action of dorsal interossei DAB

A

Abduction of toes 2-4 and flexion of MTP joints

67
Q

Origin of EDB

A

Calcaneus (interosseus talocalcaneal ligament, stem of inferior extensor retinaculum)

68
Q

Insertion of EDB

A

Tendons of extensor digitorum 2-4

69
Q

Innervation of EDB

A

deep fibular nerve ( peroneal)

70
Q

Action of of EDB

A

Aids EDL in extending toes 2-4 at MTP and IP joints

71
Q

Origin of Extensor hallucis brevis

A

same as EDB

72
Q

Insertion of Extensor hallucis brevis

A

dorsal aspect of base of proximal phalanx of big toe

73
Q

Innervation of Extensor hallucis brevis

A

deep fibular nerve (peroneal)

74
Q

Action of Extensor hallucis brevis

A

Aids EHL in extending big toe at MTP joint

75
Q

2 arteries of foot

A

Dorsalis pedis
Medial and lateral plantar arteries

76
Q

Continuations of dorsalis pedis

A

Deep plantar artery
Lateral tarsal artery
1st dorsal metatarsal artery
Arcuate artery
2nd 3rd and 4th dorsal metatarsal arteries
Dorsal digital arteries

77
Q

Posterior tibial artery continues as

A

Medial and lateral plantar arteries

78
Q

Continuations of lateral plantar artery

A

Larger terminal branch
Deep plantar arch
Joins deep plantar artery
Plantar metatarsal arteries
Plantar digital arteries

Anatomy (17 decks)

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