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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
Q

Fibularis Longus /Brevis Talcrural joint & Subtalar joint ACTION

A

Plantar Flexion

eversion

26
Q

Fibularis Longus action

A

supports transverse arch of foot

27
Q

Gastrocnemius ORIGIN

A

femur (medial & lateral epicondyles)

28
Q

Gastrocneumius INSERTION

A

calcaneal tuberosity via the calcaneal tendon

29
Q

Soleus ORIGIN

A

fibula (head & neck, post. sruface)

tibia (soleal line via a tendinous arch)

30
Q

Soleus INSERTION

A

Calcaneal tuberosity via calcaneal tendon

31
Q

Plantaris ORIGIN

A

femur (lateral epicondyle, proximal to lateral head of gastrocnemius)

32
Q

Plantaris INSERTION

A

calcaneal tuberosity

33
Q

common insertion for superficial flexors of posterior compartment

A

calcaneal tuberosity

34
Q

Tibialis Posterior ORIGIN

A

interosseous membrane, adj. borders of tibia and fibula

35
Q

Tibialis Posterior INSERTION

A

navicular tuberosity
cunefiroms (medial, intermediate, and lateral)
2-4th metatarsal (base)

36
Q

Tibialis Posterior INNERVATION

A

Tibial N

L4,L5

37
Q

Flexor Digitorum longus ORIGIN

A

Tibia (middle 1/3 of post. surface)

38
Q

Flexor Digitorum longus INSERTION

A

2nd-5th distal phlanges (bases)

39
Q

Flexor digitorum longus INNERVATION

A

tibial N

L5-S2

40
Q

Flexor Hallucis Longus ORIGIN

A

fibula (distal 2/3 of post. surface)

adj. interosseous membrane

41
Q

Flexor hallucis longus INSERTION

A

1st distal phalanx (base)

42
Q

Flexor hallucis longus INNERVATION

A

Tibial N

L5-S2

43
Q

Popliteus ORIGIN

A

lateral femoral condyle, post. horn of latera meniscus

44
Q

Popliteus INSERTION

A

post. tibial surface (above the origin at the soleus)

45
Q

Popliteus INNERVATION

A

Tibial N

L4-S1

46
Q

Common insertion of deep flexors of post. compartment

A

Tibial N

47
Q

Common action of deep flexors or posterior compartment

Talocrural joint & Subtalar joint

A

plantar flexion

inversion

48
Q

Tibialis Posterior ACTION

A

supports longitudinal and transverse arches

49
Q

Flexor Digitorum Longus ACTION

A

MTP & IP joints of 2-5th toes: plantar flexion

50
Q

Flexor Hallucis Longus

A

MTP & IP joints of 1st toe: plantar flexion

supports medial longitudinal arch

51
Q

Popliteus ACTION

A

knee joint: flexion an internal rotation (stabilizes the knee)

EXAM 4 GROSS (3 decks)

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