LE muscles: origins, insertions, nerve, actions
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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| Soleus | O:Posterior tibia and fibula I:Posterior calcaneus A:Ankle plantar flexion N:tibial nerve
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| tibialis posterior | O: Interosseous membrane, adjacent tibia and fibula I:Navicular and most tarsals and metatarsals A:Ankle inversion; assists in plantar flexion N:Tibial nerve
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| popliteus | O:Lateral condyle of femur I:Posterior surface of medial condyle of tibia A:Initiates knee flexion N:Tibial nerve
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| gastrocnemius | O:Medial and lateral condyles of femur I:Posterior calcaneus A:Knee flexion, ankle plantar flexion N:Tibial nerve
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| plantaris | Posterior lateral condyle of femur I:Posterior calcaneus A:Very weak assist in knee flexion and ankle plantar flexion N:Tibial nerve
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| vastus intermedialis | O:Anterior femur I:Tibial tuberrosity via patellar tendon A:Knee extension N:Femoral nerve
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| vastus medialis | O:Linea aspera I:Tibial tuberosity via patellar tendon A:Knee extension N:Femoral nerve
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| vastus lateralis | O:Linea aspera I:Tibial tuberosity via patellar tendon A:Knee extension N:Femoral nerve
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| extensor digitorum longus | O:Fibula, interosseous membrane, tibia I:Distal phalanx of four lesser toes A:Extends four lesser toes, assists in ankle dorsiflexion N:Deep peroneal nerve
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lscstudent
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