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The gastrocnemius muscle is superficial to (closer to the skin than) the soleus, which lies below the gastrocnemius. The plantaris muscle and a portion of its tendon run between the two muscles. Deep to it (further from the skin) is the transverse intermuscular septum , which separates the superficial posterior compartment of the leg from the ...
The gastrocnemius is located with the soleus in the posterior compartment of leg. It is considered a superficial muscle as it is located directly under skin, and its shape may often be visualized through the skin. Beneath the gastrocnemius (farther from the skin) is the soleus muscle.
Deep posterior compartment: Tibialis posterior; Flexor hallucis longus; Flexor digitorum longus; Popliteus; Tibial nerve, posterior tibial artery and posterior tibial vessels such as the fibular artery: Superficial posterior compartment: Gastrocnemius; Soleus; Plantaris; Tibial nerve
The superficial portion (the gastrocnemius) gives off two heads attaching to the base of the femur directly above the knee. The deep (profundus) mass of muscle (the soleus) forms the remaining head which attaches to the superior posterior area of the tibia. The triceps surae is innervated by the tibial nerve, specifically, nerve roots L5–S2.
Weakly assists gastrocnemius in plantarflexing ankle Soleus: Posterior aspect of head and superior quarter of posterior surface of fibula; soleal line and middle third of medial border of tibia; and tendinous arch extending between the bony attachments: Plantarflexes ankle independent of position of knee; steadies leg on foot
It is one of the plantar flexors in the posterior compartment of the leg, along with the gastrocnemius and soleus muscles. The plantaris is considered to have become an unimportant muscle when human ancestors switched from climbing trees to bipedalism and in anatomically modern humans it mainly acts with the gastrocnemius. [1]
It is thick and dense in the upper and anterior part of the leg, and gives attachment, by its deep surface, to the tibialis anterior and extensor digitorum longus; but thinner behind, where it covers the gastrocnemius and soleus. It gives off from its deep surface, on the lateral side of the leg, two strong intermuscular septa, the anterior and ...
The plantaris closely follows the lateral head of the gastrocnemius. Its tendon runs between those of the soleus and gastrocnemius and is embedded in the medial end of the calcaneus tendon. [32] In the deep layer, the tibialis posterior has its origin on the interosseus membrane and the neighbouring bone areas and runs down behind the medial ...