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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

(78 cards)

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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
Action of Abductor hallucis
abducts and flexes big toe
26
Origin of Flexor digitorum brevis
medial tubercle of tuberosity of calcaneus flexor retinaculum plantar aponeurosis
27
Insertion of Flexor digitorum brevis
both sides of middle phalanges of digits 2-5
28
Innervation of Flexor digitorum brevis
medial plantar nerve
29
Action of Flexor digitorum brevis
flexes lateral 4 digits
30
Origin of Abductor digiti minimi
medial and lateral tubercles of tuberosity of calcaneus plantar aponeurosis intermuscular septa
31
Insertion of Abductor digiti minimi
lateral side of base of proximal phalanx of digit 5
32
Innervation of Abductor digiti minimi
lateral plantar nerve
33
Action of Abductor digiti minimi
abducts and flexes little toe
34
Plantar muscles in layer 2
Quadratus plantae Lumbricals
35
Origin of Quadratus plantae
medial surface and lateral margin of plantar surface of calcaneus
36
Insertion of Quadratus plantae
posterolateral margin of tendon of flexor digitorum longus
37
Innervation of Quadratus plantae
lateral plantar nerve
38
Action of Quadratus plantae
assists FDL in flexing toes 2-5
39
Origin of Lumbricals
tendons of FDL
40
Insertion of Lumbricals
medial part of expansion over digits 2-5
41
Innervation of Lumbricals
1st = medial plantar nerve 2nd = lateral plantar nerve
42
Actions of lumbricals
flexes proximal phalanges extends middle and distal phalanges of digits 2-5
43
Plantar muscles in layer 3
flexor hallucis brevis adductor hallucis flexor digiti minimi brevis
44
Origin of flexor hallucis brevis
plantar surface of cuboid and lateral cuneiforms
45
Innervation of flexor hallucis brevis
medial plantar nerve
46
Action of flexor hallucis brevis
flexes prox. phalanx of big toe
47
Insertion of flexor hallucis brevis
base of prox. phalanx of big toe
48
what does the flexor hallucis brevis tendon contain
2 sesamoid bones
49
Origin of oblique head of adductor hallucis
bases of metatarsals 2-4
50
Origin of transverse head of of adductor hallucis
plantar ligaments of MTP joints
51
Insertion of adductor hallucis
lat. side of base of prox. phalanx of big toe
52
Innervation of adductor hallucis
deep branch of lat. plantar nerve
53
Action of adductor hallucis
adducts big toe assists in transverse arch by pulling metatarsals medially
54
Action of flexor digiti minimi brevis
flexes proximal phalanx of little toe
55
Origin of flexor digiti minimi brevis
base of metatarsal 5v
56
Insertion of flexor digiti minimi brevis
base of prox. phalanx 5
57
Innervation of flexor digiti minimi brevis
superficial branch of lateral plantar nerve
58
Action of plantar interossei PAD
adducts toes 3-5 and flexes MTP joints
59
Origin of plantar interossei
plantar aspect of medial sides of metatarsals 3-5
60
Insertion of plantar interossei
medial sides of bases of prox. phalanges 3-5v
61
Innervation of plantar interossei
lateral plantar nerve
62
Plantar muscles of layer 4
Plantar interossei + Dorsal interossei
63
Origin of dorsal interossei
adjacent sides of metatarsals 1-5
64
Insertion of dorsal interossei
1st - medial side of prox. phalanx of 2nd digit 2nd - lateral side of digit 2-4
65
Innervation of dorsal interossei
lateral plantar nerve
66
Action of dorsal interossei DAB
Abduction of toes 2-4 and flexion of MTP joints
67
Origin of EDB
Calcaneus (interosseus talocalcaneal ligament, stem of inferior extensor retinaculum)
68
Insertion of EDB
Tendons of extensor digitorum 2-4
69
Innervation of EDB
deep fibular nerve ( peroneal)
70
Action of of EDB
Aids EDL in extending toes 2-4 at MTP and IP joints
71
Origin of Extensor hallucis brevis
same as EDB
72
Insertion of Extensor hallucis brevis
dorsal aspect of base of proximal phalanx of big toe
73
Innervation of Extensor hallucis brevis
deep fibular nerve (peroneal)
74
Action of Extensor hallucis brevis
Aids EHL in extending big toe at MTP joint
75
2 arteries of foot
Dorsalis pedis Medial and lateral plantar arteries
76
Continuations of dorsalis pedis
Deep plantar artery Lateral tarsal artery 1st dorsal metatarsal artery Arcuate artery 2nd 3rd and 4th dorsal metatarsal arteries Dorsal digital arteries
77
Posterior tibial artery continues as
Medial and lateral plantar arteries
78
Continuations of lateral plantar artery
Larger terminal branch Deep plantar arch Joins deep plantar artery Plantar metatarsal arteries Plantar digital arteries

Anatomy (17 decks)

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