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7 Cards in this Set
- Front
- Back
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Gastrocnemius
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Superficial
Origin: lat head- lat aspect of lateral condyle of femur. med head- popliteal suf of femur; sup to medial condyle Insertion: post surf of calcaneus via calcaneal tendon Innervation: tibial nerve Function: plantarflexes ankle when knee is extended; raises heel during walking; flexes leg at knee joint |
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Soleus
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Superficial
Origin: Post aspect of head and sup 1/4 of post surf of fibula; soleal line and middle 1/3 of medial border of tibia; and tendinous arch extending between the bony attachments Insertion: post surf of calcaneus via calcaneal tendon Innervation: tibial nerve Function: plantarflexes ankle independent of position of knee; steadies leg on foot |
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Plantaris
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Superficial
Origin: inf end of lat supracondylar line of femur; oblique popliteal ligament Insertion: post surf of calcaneus via calcaneal tendon Innervation: tibial nerve Function: weakly assists gastrocnemius in plantarflexing ankle |
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Popliteus
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Deep
Origin: lat suf of lat condyle of femur and lat meniscus Insertion: post surf of tibia, sup to soleal line Innervation: tibial nerve Function: weakly flexes knee and unlocks it by rotating femur 5degrees on fixed tibia; medially rotates tibia of unplanted limb |
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Flexor hallucis longus
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Deep
Origin: inf 2/3 of post suf of fibula; inf part of inteross mem Insertion: base of distal phalanx of great toe Innervation: tibial nerve Function: flexes great toe at all joints; weakly plantarflexes ankle; support medial longitudinal arch of foot |
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Flexor digitorum longus
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Deep
Origin: medial part of post surf of tibia inf to soleal line; by a broad tendon to fibula Insertion: bases of distal phalanges of lateral four digits Innervation: tibial nerve Function: plantarflexes ankle; inverts foot |
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Tibialis posterior
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Deep
Origin: interosseous membrane; post surf of tibia inf to soleal line; post surf of fibula Insertion: tuberosity of navicular, cuneiform, cuboid, and sustentaculum tali of calcaneus; bases of 2nd, 3rd, and 4th metatarsals Innervation: tibial nerve Function: plantarflexes ankle; inverts foot |
