part of part of innervated by innervated_by has muscle origin has muscle origin has muscle insertion has muscle insertion has muscle antagonist femur tibial nerve tibialis anterior calcaneal tendon hindlimb zeugopod hindlimb zeugopod muscle plantaris UBERON:0011905 EFO:0001979 FMA:22543 plantaris Plantaris is a vestigial structure and one of the superficial muscles of the posterior crural compartment of the leg. It is innervated by the tibial nerve (S1, S2) . It is composed of a thin muscle belly and a long thin tendon. It is approximately 2-4 inches long, and is absent in 7 - 10% of the human population. It is one of the plantar flexors in the superior compartment of the leg along with the gastrocnemius, and soleus. The plantaris is considered an unimportant muscle, it mainly acts with gastrocnemius[WP]. Wikipedia:Plantaris_muscle musculus plantaris BTO:0006312 EMAPA:36254 todo - coordinate with phenoscape-ext on representation of amphibian plantaris longus and profundus