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MSK extras > muscles of the leg > Flashcards

muscles of the leg Flashcards

1
Q

what are the anterior muscles of the leg?

A
  • tibialis anterior
  • extensor digitorum longus
  • extensor hallucis longus
  • fibularis tertius
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2
Q
  1. what is the origin of tibialis anterior?
  2. what is the insertion of tibialis anterior?
  3. what is the action of tibialis anterior?
  4. what is the innervation of tibialis anterior?
A
  1. tibia
  2. metatarsal I
  3. dorsiflexion + inversion
  4. deep fibular nerve
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3
Q
  1. what is the origin of extensor digitorum longus?
  2. what is the insertion of extensor digitorum longus?
  3. what is the action of extensor digitorum longus?
  4. what is the innervation of extensor digitorum longus?
A
  1. tibia and fibula
  2. distal phalanges of toe 2-5
  3. dorsiflexion + toe extension
  4. deep fibular nerve
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4
Q
  1. what is the origin of extensor hallucis longus?
  2. what is the insertion of extensor hallucis longus?
  3. what is the action of extensor hallucis longus?
  4. what is the innervation of extensor hallucis longus?
A
  1. fibula
  2. distal phalanx of great toe
  3. dorsiflexion + great toe extension
  4. deep fibular nerve
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5
Q
  1. what is the origin of fibularis tertius?
  2. what is the insertion of fibularis tertius?
  3. what is the action of fibularis tertius?
  4. what is the innervation of fibularis tertius?
A
  1. fibular
  2. metatarsal V
  3. dorsiflexion + ankle eversion
  4. deep fibular nerve
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6
Q

what are the superficial muscles of the posterior leg?

A
  • gastrocnemius
  • plantaris
  • soleus
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7
Q
  1. what is the origin of gastrocnemius?
  2. what is the insertion of gastrocnemius?
  3. what is the action of gastrocnemius?
  4. what is the innervation of gastrocnemius?
A
  1. LH = lateral femoral condyle + MH = medial femoral condyle
  2. calcaneus
  3. plantarflexion + knee flexion
  4. tibial nerve
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8
Q
  1. what is the origin of plantaris?
  2. what is the insertion of plantaris?
  3. what is the action of plantaris?
  4. what is the innervation of plantaris?
A
  1. supracondylar line
  2. calcaneus
  3. plantarflexion + knee flexion
  4. tibial nerve
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9
Q
  1. what is the origin of soleus?
  2. what is the insertion of soleus?
  3. what is the action of soleus?
  4. what is the innervation of soleus?
A
  1. soleal line
  2. calcaneus
  3. plantarflexion
  4. tibial nerve
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10
Q

what are the deep muscles of the posterior leg?

A
  • popliteus
  • tibialis posterior
  • flexor digitorum longus
  • flexor hallucis longus
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11
Q
  1. what is the origin of popliteus?
  2. what is the insertion of popliteus?
  3. what is the action of popliteus?
  4. what is the innervation of popliteus?
A
  1. tibia
  2. lateral condyle of femur
  3. laterall rotates femur on tibia
  4. tibial nerve
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12
Q
  1. what is the origin of tibialis posterior?
  2. what is the insertion of tibialis posteior?
  3. what is the action of tibialis posterior?
  4. what is the innervation of tibialis posterior?
A
  1. interosseous membrane
  2. medial malleolus
  3. inversion of ankle, plantarflexion
  4. tibial nerve
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13
Q
  1. what is the origin of flexor digitorum longus?
  2. what is the insertion of flexor digitorum longus?
  3. what is the action of flexor digitorum longus?
  4. what is the innervation of flexor digitorum longus?
A
  1. tibia
  2. middle and distal phalanges of toes 2-5
  3. toes 2-5 flexion
  4. tibial nerve
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14
Q
  1. what is the origin of flexor hallucis longus?
  2. what is the insertion of flexor hallucis longus?
  3. what is the action of flexor hallucis longus?
  4. what is the innervation of flexor hallucis longus?
A
  1. fibula
  2. distal phalanx of great toe
  3. great toe flexion
  4. tibial nerve
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15
Q

what are the muscles of the lateral leg?

A
  • fibularis longus
  • fibularis brevis
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16
Q
  1. what is the origin of fibularis longus?
  2. what is the insertion of fibularis longus?
  3. what is the action of fibularis longus?
  4. what is the innervation of fibularis longus?
A
  1. lateral tibial condyle
  2. medial cuniform and metatarsal I
  3. plantarflexion + ankle eversion
  4. superficial fibular nerve
17
Q
  1. what is the origin of fibularis brevis?
  2. what is the insertion of fibularis brevis?
  3. what is the action of fibularis brevis?
  4. what is the innervation of fibularis brevis?
A
  1. fibula
  2. metatarsal V
  3. ankle eversion
  4. superficial fibular nerve

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