11.3--Muscle Groups
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Tibialis Anterior | Origin: Lateral condyle and body of tibia and interosseus membrane
Insertion: 1st Metatarsal and 1 cuneiform (medial)
Action: Dorsiflexion at ankle and inverts foot (towards midline)
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| Extensor Hallucis Longus | Origin: Anterior surface of fibula
Insertion: Distal phalanx of great toe
Action: Dorsiflexion and extension of proximal phalanx of hallux
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| Extensor Digitorum Longus | Origin: Tibia; anterior surface of fibula
Insertion: middle and distal phalanges of 2-5
Action: Dorsiflexion, extension of toes
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| Fibularis Tertius | Origin: Distal third of fibula
Insertion: Base of fifth metatarsal
Action: Dorsiflexion; eversion of foot
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| Fibularis Longus | Origin: Head and body of fibula
Insertion: 1st metatarsal and cuneiform
Action: Plantar flexes foot at ankle and everts foot
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| Fibularis Brevis | Origin: Body of fibula
Insertion: Base of fifth metatarsal
Action: Plantar flexes and everts foot at metatarsal joints
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| Gastrocnemius | Origin: Lateral and medial condyles of femur and knee
Insertion: Calcaneus
Action: Plantar flexion, leg flexion
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| Soleus | Origin: Head of fibula and medial border of tibia
Insertion: Calcaneus
Action: Plantar flexion
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| Plantaris | Origin: Femur superior to lateral condyle
Insertion: Calcaneus
Action: Plantar flexion and leg flexion
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| Popliteus | Origin: Lateral condyle of femur
Insertion: Proximal tibia
Action: Flexion of leg and medial roation of tibia
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| Tibialis Posterior | Origin: Tibia, fibula
Insertion: 2,3,4 metatarsals, 3 cuneiforms and cuboid
Action: Plantar flexion; inversion of foot
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| Flexor Digitorum longus | Origin: Posterior of tibia
Insertion: Distal phalanges 2-5
Action: Plantar flexion. Flexion of phalanges
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| Flexor Hallucis Longus | Origin: Inferior 2/3ds of fibula
Insertion: Hallux
Action: Plantar flexion and flexion of hallux
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