Muscles Flashcards

1
Q

Which muscles are ankle extensors?

A
  • Tibialis Anterior
  • Extensor Hallicus Longus
  • Extensor Digitorum Longus
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2
Q

Which muscles are ankle flexors?

A
  • Gastrocnemius
  • Soleus
  • Plantaris
  • Tibialis Posterior
  • Flexor Hallicus Longus
  • Flexor Digitorum Longus
  • Peroneus (Fibularis) Longus
  • Peroneus (Fibularis) Brevis
  • Popliteus
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3
Q

Which muscles ALL distally attach at the calcaneal tuberosity?

A
  • Gastrocnemius
  • Soleus
  • Plantaris
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4
Q

Tibialis Anterior: Actions

A
  • Inverts the foot
  • Dorsiflxes the ankle
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5
Q

Tibialis Anterior: Origin

A
  • Lateral condyle of tibia
  • Proximal lateral surface of tibia
  • Interosseous membrane
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6
Q

Tibialis Anterior: Insertion

A
  • Medial Cuneiform
  • Base of First Metatarsal
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7
Q

Extensor Hallucis Longus: Action

A
  • Extends the first toe
  • Dorsiflexes the ankle
  • Inverts the foot
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8
Q

Extensor Hallicus Longus: Origin

A
  • Middle, anterior surface of fibula
  • Interosseous membrane
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9
Q

Extensor Hallicus Longus: Insertion

A

Distal phalanx of first toe

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10
Q

Extensor Digitorum Longus: Action

A
  • Extends 2nd - 5th toes
  • Dorsiflexes the ankle
  • Everts the foot
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11
Q

Extensor Digitorum Longus: Origin

A
  • Lateral Condyle of Tibia
  • Proximal Anterior shaft of Fibula
  • Interosseous Membrane
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12
Q

Extensor Digitorum Longus: Insertion

A

Middle and Distal phalanges of 2nd - 5th toes

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13
Q

Tibialis Posterior: Action

A
  • Inverts the foot
  • Plantar Flexes the ankle
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14
Q

Tibialis Posterior: Origin

A
  • Proximal, posterior shafts of tibia and fibula
  • Interosseous Membrane
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15
Q

Tibialis Posterior: Insertion

A
  • All 5 tarsal bones
  • Bases of 2nd - 4th metatarsals
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16
Q

Flexor Digitorum Longus

A
  • Flexes 2nd - 5th toes
  • Weak plantar flexion of ankle
  • Inverts the foot
17
Q

Flexor Digitorum Longus: Origin

A

Middle, posterior surface of tibia

18
Q

Flexor Digitorum Longus: Insertion

A

Distal phalanges of 2nd - 5th toes

19
Q

Flexor Hallucis Longus: Action

A
  • Flexes the 1st toe
  • Weak plantar flexion of ankle
  • Inverts foot
20
Q

Flexor Hallucis Longus: Origin

A

Middle half of posterior fibula

21
Q

Flexor Hallucis Longus: Insertion

A

Distal phalanx of first toe

22
Q

Gastrocnemius: Action

A
  • Flexes the knee
  • Plantar Flexes the Ankle
23
Q

Gastrocnemius: Origin

A
  • Condyles of the femur
  • Posterior Surfaces
24
Q

Gastrocnemius: Insertion

A

Calcaneus via calcaneal/Achilles tendon

25
Q

Soleus: Action

A

Plantar flexes the ankle

26
Q

Soleus: Origin

A
  • Soleal line
  • Proximal posterior surface of tibia
  • Posterior aspect of head of fibula
27
Q

Soleus: Insertion

A

Calcaneus via calcaneal/achilles tendon

28
Q

Plantaris: Action

A
  • Weak plantar flexion of the ankle
  • Weak flexion of the knee
29
Q

Plantaris: Origin

A

Lateral supracondylar line of femur

30
Q

Popliteus: Action

A
  • Medially rotates flexed knee
  • Flexes the knee
31
Q

Plantaris: Insertion

A

Calcaneus via calcaneal/achilles tendon

32
Q

Popliteus: Origin

A

Lateral condyle of the femur

33
Q

Popliteus: Insertion

A

Proximal, posterior aspect of tibia

34
Q

Peroneus (Fibularis) Longus: Action

A
  • Everts the foot
  • Assists to plantar flex the ankle
35
Q

Peroneus (Fibularis) Longus: Origin

A
  • Head of fibula
  • Proximal two-thirds of lateral fibula
36
Q

Peroneus (Fibularis) Longus: Insertion

A

Base of 1st metatarsal
Medial cuneiform

37
Q

Peroneus (Fibularis) Brevis: Action

A
  • Everts the foot
  • Assists in plantar flexion of the ankle
38
Q

Peroneus (Fibularis) Brevis: Origin

A

Distal two-thirds of lateral fibula

39
Q

Peroneus (Fibularis) Brevis: Insertion

A

Tuberosity of 5th metatarsal