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10 Cards in this Set
- Front
- Back
Tibialis Anterior
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Superficial muscle of anterior leg. Laterally parallels anterior margin of tibia.
O: lateral condyle and upper part of tibial shaft I: by tendon to inferior surface of medial cuneiform and metatarsal 1 A: Prime mover of dorsiflexion |
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Extensor Digitorum Longus
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Lateral to tibialis anterior. Unipennate muscle on anterolateral surface of leg.
O: lateral condyle of tibia I: middle and distal phalanges 2-5 (toes) via extensor expansion A: prime mover of toe extension |
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Extensor Hallucis Longus
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Deep to extensor digitorum longus and tibialis anterior. Narrow.
O: anteromedial fibular shaft and interosseous membrane I: distal phalanx of hallux via tendon A: extends hallux |
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Peroneus Longus (Fibularis Longus)
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Superficial lateral muscle overlying the fibula. Bipennate.
O: head and upper portion of lateral aspect of fibula I: by long tendon that curves under foot to metatarsal 1 and medial cuneiform A: plantarflexion, eversion |
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Triceps Surae
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Muscle pair (gastrocnemius and soleus) that shapes the posterior calf and inserts via Achilles tendon into the calcaneus. Plantarflexion prime mover.
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Gastrocnemeus
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Superficial muscle of triceps surae. Bulge of the calf muscle.
O: 2 heads from medial and lateral condyles of femur I: posterior calcaneus via calcaneal (Achilles) tendon A: plantarflexion |
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Soleus
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Triceps surae deep to gastrocnemius. Broad, flat muscle.
O: superior tibia, fibula, and interosseous membrane I: posterior calcaneus via calcaneal (Achilles) tendon A: plantarflexion |
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Tibialis Posterior
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Thick, flat muscle deep to soleus.
O: superior tibia and fibula and interosseus membrane I: tendon passes behind medial malleolus and under arch of foot to insert into several tarsals and metatarsals 2-4. A: prime mover in inversion. |
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Flexor Digitorum Longus
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Long, narrow muscle medial to and partially overlying tibialis posterior.
O: posterior tibia I: tendon runs behind medial malleolus and inserts into distal phalanges 2-5 (toes) A: plantarflexion and inversion |
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Flexor Hallucis Longis
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Deep bipennate muscle lying lateral to the inferior aspect of the posterior tibia. Crosses over the tibialis posterior diagonally.
O: midshaft of fibula I: tendon runs under foot to distal phalanx of hallux A: plantarflexion and inversion |