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Anatomy 3 > Lower Leg > Flashcards

Lower Leg Flashcards

OINA's

1
Q

Gastrocnemius Action

A
  • plantarflex ankle when knee is extended
  • raise heel during walking
  • flex knee joint
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2
Q

Gastrocnemius PA

A
  • medial head: popliteal surface of femur
  • lateral head: lateral femoral condyle
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3
Q

Gastrocnemius DA

A

calcaneus via calcaneal/achilles tendon

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4
Q

Gastrocnemius Innervation

A

tibial nerve (S1, S2)

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5
Q

Soleus Action

A
  • plantarflex ankle (independent of knee position)
  • stabilize ankle joint
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6
Q

Soleus PA

A

posterior fibula, soleal line and medial tibia, tendinous arch extending b/w bony attachments

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7
Q

Soleus DA

A

calcaneus via calcaneal/achilles tendon

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8
Q

Soleus Innervation

A

tibial nerve (S1, S2)

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9
Q

Plantaris Action

A

weakly assists gastrocnemius in ankle plantarflexion

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10
Q

Plantaris PA

A

lateral supracondylar ridge of femur, oblique popliteal ligament

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11
Q

Plantaris DA

A

calcaneus via calcaneal/achilles tendon

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12
Q

Plantaris Innervation

A

tibial nerve (S1, S2)

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13
Q

Popliteus Action

A
  • unlocks knee by rotating femur 5 degrees on fixed tibia
  • medially rotates tibia of unplanted limb
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14
Q

Popliteus PA

A

lateral condyle of femur, lateral meniscus

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15
Q

Popliteus DA

A

posterior tibia above soleal line

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16
Q

Popliteus Innervation

A

tibial nerve (L4, L5, S1)

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17
Q

Flexor Hallucis Longus Action

A
  • flex great toe
  • weakly plantarflex ankle
  • support medial longitudinal arch of foot
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18
Q

Flexor Hallucis Longus PA

A

lower posterior surface of fibula, interosseous membrane

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19
Q

Flexor Hallucis Longus DA

A

base of distal phalanx of great toe

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20
Q

Flexor Hallucis Longus Innervation

A

tibial nerve (S2, S3)

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21
Q

Flexor Digitorum Longus Action

A
  • flex digits 2-5
  • plantarflex ankle
  • support longitudinal arches of foot
22
Q

Flexor Digitorum Longus PA

A

posterior tibia inferior to soleal line, by a broad tendon to fibula

23
Q

Flexor Digitorum Longus DA

A

bases of distal phalanges of digits 2-5

24
Q

Flexor Digitorum Longus Innervation

A

tibial nerve (S2, S3)

25
Q

Tibialis Posterior Action

A
  • plantarflex ankle
  • invert foot
  • maintain medial longitudinal arch of foot
26
Q

Tibialis Posterior PA

A

posterior tibia inferior to soleal line, posterior surface of fibula, interosseous membrane

27
Q

Tibialis Posterior DA

A

bases of 2nd, 3rd, and 4th metatarsals; tuberosity of navicular; cuneiforms; cuboid; and sustentaculum tali of calcaneus

28
Q

Tibialis Posterior Innervation

A

tibial nerve (L4, L5)

29
Q

Fibularis Longus Action

A
  • evert subtalar joint
  • weakly plantarflex ankle
30
Q

Fibularis Longus PA

A

head of fibula, superior lateral fibula

31
Q

Fibularis Longus DA

A

base of 1st metatarsal, medial cuneiform

32
Q

Fibularis Longus Innervation

A

superficial fibular nerve (L5, S1, S2)

33
Q

Fibularis Brevis Action

A
  • evert subtalar joint
  • weakly plantarflex ankle
34
Q

Fibularis Brevis PA

A

inferior lateral fibula

35
Q

Fibularis Brevis DA

A

lateral side of base of 5th metatarsal

36
Q

Fibularis Brevis Innervation

A

superficial fibular nerve (L5, S1, S2)

37
Q

Tibialis Anterior Action

A
  • dorsiflex ankle
  • invert subtalar joint
38
Q

Tibialis Anterior PA

A

lateral condyle and superior half of tibia, interosseous membrane

39
Q

Tibialis Anterior DA

A

base of 1st metatarsal, medial cuneiform

40
Q

Tibialis Anterior Innervation

A

deep fibular nerve (L4, L5)

41
Q

Extensor Hallucis Longus Action

A
  • extend great toe
  • dorsiflex ankle
42
Q

Extensor Hallucis Longus PA

A

middle anterior fibula, interosseous membrane

43
Q

Extensor Hallucis Longus DA

A

base of distal phalanx of great toe

44
Q

Extensor Hallucis Longus Innervation

A

deep fibular nerve (L5, S1)

45
Q

Extensor Digitorum Longus Action

A
  • extend digits 2-5
  • dorsiflex ankle
46
Q

Extensor Digitorum Longus PA

A

lateral condyle of tibia, superior surface of fibula, interosseous membrane

47
Q

Extensor Digitorum Longus DA

A

middle and distal phalanges of lateral 4 digits

48
Q

Extensor Digitorum Longus Innervation

A

deep fibular nerve (L5, S1)

49
Q

Fibularis Tertius Action

A
  • dorsiflex ankle
  • aids in eversion of subtalar joint
50
Q

Fibularis Tertius PA

A

inferior anterior surface of fibula, interosseous membrane

51
Q

Fibularis Tertius DA

A

dorsum of base of 5th metatarsal

52
Q

Fibularis Tertius Innervation

A

deep fibular nerve (L5, S1)

Anatomy 3 (5 decks)

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