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Anatomy 3 > Lower Leg > Flashcards

Lower Leg Flashcards

OINA's (52 cards)

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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

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

Flexor Digitorum Longus PA

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A

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

23
Q

Flexor Digitorum Longus DA

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A

bases of distal phalanges of digits 2-5

24
Q

Flexor Digitorum Longus Innervation

Study These Flashcards
A

tibial nerve (S2, S3)

25
Tibialis Posterior Action
- plantarflex ankle - invert foot - maintain medial longitudinal arch of foot
26
Tibialis Posterior PA
posterior tibia inferior to soleal line, posterior surface of fibula, interosseous membrane
27
Tibialis Posterior DA
bases of 2nd, 3rd, and 4th metatarsals; tuberosity of navicular; cuneiforms; cuboid; and sustentaculum tali of calcaneus
28
Tibialis Posterior Innervation
tibial nerve (L4, L5)
29
Fibularis Longus Action
- evert subtalar joint - weakly plantarflex ankle
30
Fibularis Longus PA
head of fibula, superior lateral fibula
31
Fibularis Longus DA
base of 1st metatarsal, medial cuneiform
32
Fibularis Longus Innervation
superficial fibular nerve (L5, S1, S2)
33
Fibularis Brevis Action
- evert subtalar joint - weakly plantarflex ankle
34
Fibularis Brevis PA
inferior lateral fibula
35
Fibularis Brevis DA
lateral side of base of 5th metatarsal
36
Fibularis Brevis Innervation
superficial fibular nerve (L5, S1, S2)
37
Tibialis Anterior Action
- dorsiflex ankle - invert subtalar joint
38
Tibialis Anterior PA
lateral condyle and superior half of tibia, interosseous membrane
39
Tibialis Anterior DA
base of 1st metatarsal, medial cuneiform
40
Tibialis Anterior Innervation
deep fibular nerve (L4, L5)
41
Extensor Hallucis Longus Action
- extend great toe - dorsiflex ankle
42
Extensor Hallucis Longus PA
middle anterior fibula, interosseous membrane
43
Extensor Hallucis Longus DA
base of distal phalanx of great toe
44
Extensor Hallucis Longus Innervation
deep fibular nerve (L5, S1)
45
Extensor Digitorum Longus Action
- extend digits 2-5 - dorsiflex ankle
46
Extensor Digitorum Longus PA
lateral condyle of tibia, superior surface of fibula, interosseous membrane
47
Extensor Digitorum Longus DA
middle and distal phalanges of lateral 4 digits
48
Extensor Digitorum Longus Innervation
deep fibular nerve (L5, S1)
49
Fibularis Tertius Action
- dorsiflex ankle - aids in eversion of subtalar joint
50
Fibularis Tertius PA
inferior anterior surface of fibula, interosseous membrane
51
Fibularis Tertius DA
dorsum of base of 5th metatarsal
52
Fibularis Tertius Innervation
deep fibular nerve (L5, S1)

Anatomy 3 (6 decks)

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