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EXAM 4 GROSS > Leg muscles > Flashcards

Leg muscles Flashcards

1
Q

Tibialis Anterior ORIGIN

A

tibia (upper 2/3 of lateral surface)
interosseous membrane
superficial crural fascia (medial base)

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2
Q

Tibialis Anterior INSERTION

A 
medial cuneiform (medial and plantar surface)
first metatarsal (medial base)
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3
Q

Tibialis Anterior INNERVATION

A

Deep Fibular N (L4,L5)

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4
Q

Anterior Compartment - Talocrural joint ACTION

A

DORSIFLEXION

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5
Q

tibialis anterior subtalar joint ACTION

A

inversion

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6
Q

Anterior compartment muscles

A

tibialis anterior
extensor hallucis longus
extensor digitorum longus
fibularis tertius

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7
Q

Extensor Hallucis longus ORIGIN

A

fibula (middle 1/3 of medial surface) interosseous membrane

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8
Q

Extensor Hallucis longus INSERTION

A

1st toe (at dorsal aponeurosis & base of distal phalanx)

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9
Q

Extensor Hallucis Longus INNERVATION

A

deep fibular N

L4,L5

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10
Q

extensor hallucis longus ACTION

A

subtalar joint: active in both eversion and inversion

extends MTP & IP joints of big toe

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11
Q

Extensor digitorum longus ORIGIN

A

fibula (head & medial surface)
tibia (lateral condyle)
interosseous membrane

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12
Q

Extensor Digitorum Longus INNERVATION

A

deep fibular N

L4,L5

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13
Q

extensor digitorum longus INSERTION

A

2nd-5th toes (at dorsal aponeuroses at bases of distal phalanges)

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14
Q

extensor digitorum longus ACTION

A

subtalar joint: eversion

extends MTP & IP joint of 2nd - 5th toes

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15
Q

Fibularis tertius ORIGIN

A

Distal fibula (anterior border)

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16
Q

Fibularis Tertius INSERTION

A

5TH metatarsal (base)

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17
Q

Fibularis tertius INNERVATION

A

deep fibular N (L4,L5)

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18
Q

fibularis tertius ACTION

A

subtalar joint: eversion

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19
Q

Common innervation anterior compartment muscles

A

Deep Fibular N

L4,L5

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20
Q

Fibularis Longus ORIGIN

A

fibula (head and proximal 2/3 of lateral surface arising partly from intermuscular septa)

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21
Q

Fibularis longus INSERTION

A 
medial cunfeiform (plantar side)
1st metatarsal ( base)
22
Q

Fibularis longus INNERVATION

A

Superficial fibular N

L5,S1

23
Q

Fibularis Brevis ORIGIN

A

fibula (distal half of lateral surface)

intermuscular septa

24
Q

Fibularis Brevis INNERVATION

A

Superficial fibular N

L5,S1

25
Fibularis Longus /Brevis Talcrural joint & Subtalar joint ACTION
Plantar Flexion | eversion
26
Fibularis Longus action
supports transverse arch of foot
27
Gastrocnemius ORIGIN
femur (medial & lateral epicondyles)
28
Gastrocneumius INSERTION
calcaneal tuberosity via the calcaneal tendon
29
Soleus ORIGIN
fibula (head & neck, post. sruface) | tibia (soleal line via a tendinous arch)
30
Soleus INSERTION
Calcaneal tuberosity via calcaneal tendon
31
Plantaris ORIGIN
femur (lateral epicondyle, proximal to lateral head of gastrocnemius)
32
Plantaris INSERTION
calcaneal tuberosity
33
common insertion for superficial flexors of posterior compartment
calcaneal tuberosity
34
Tibialis Posterior ORIGIN
interosseous membrane, adj. borders of tibia and fibula
35
Tibialis Posterior INSERTION
navicular tuberosity cunefiroms (medial, intermediate, and lateral) 2-4th metatarsal (base)
36
Tibialis Posterior INNERVATION
Tibial N | L4,L5
37
Flexor Digitorum longus ORIGIN
Tibia (middle 1/3 of post. surface)
38
Flexor Digitorum longus INSERTION
2nd-5th distal phlanges (bases)
39
Flexor digitorum longus INNERVATION
tibial N | L5-S2
40
Flexor Hallucis Longus ORIGIN
fibula (distal 2/3 of post. surface) | adj. interosseous membrane
41
Flexor hallucis longus INSERTION
1st distal phalanx (base)
42
Flexor hallucis longus INNERVATION
Tibial N | L5-S2
43
Popliteus ORIGIN
lateral femoral condyle, post. horn of latera meniscus
44
Popliteus INSERTION
post. tibial surface (above the origin at the soleus)
45
Popliteus INNERVATION
Tibial N | L4-S1
46
Common insertion of deep flexors of post. compartment
Tibial N
47
Common action of deep flexors or posterior compartment | Talocrural joint & Subtalar joint
plantar flexion | inversion
48
Tibialis Posterior ACTION
supports longitudinal and transverse arches
49
Flexor Digitorum Longus ACTION
MTP & IP joints of 2-5th toes: plantar flexion
50
Flexor Hallucis Longus
MTP & IP joints of 1st toe: plantar flexion | supports medial longitudinal arch
51
Popliteus ACTION
knee joint: flexion an internal rotation (stabilizes the knee)

EXAM 4 GROSS (3 decks)

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