The triceps surae a term given by some anatomists to the gastrocnemius and soleus muscles together as they both insert into the calcaneus, the bone of the heel of the human foot, and from the major part of the muscle of the back part of the lower leg (the calf; otherwise known in Latin as the sura, see also the sural nerve). Considering these 2 muscles as one, the triceps surae inserts into the Achilles' tendon (tendo calcanei) and has 3 heads deriving from the 2 major masses of muscle. The superficial portion (the gastrocnemius) gives off 2 heads attaching to the base of the femur directly above the knee. The deep (profundis) mass of muscle (the soleus) forms the remaining head which attaches to the superior posterior area of the tibia. Greek anatome, from ana-temnein, to cut up), is the branch of biology that deals with the structure and organization of living things; thus there is animal anatomy (zootomy) and plant anatomy (phytonomy). ... The soleus muscle and surrounding structures, from Grays Anatomy. ... The calcaneus is the large bone making up the heel of the human foot. ... Latin is the language originally spoken in the region around Rome called Latium. ... See also: Sura (disambiguation). ... Anterior view of the femur The femur or thigh bone is the longest (length), largest (volume) and strongest (mechanical ability to resist deformity) bone of the human body. ... An x-ray of a human knee In human anatomy, the knee is the leg joint connecting the femur and the tibia. ... The soleus muscle and surrounding structures, from Grays Anatomy. ...

The triceps surae is innervated by the tibial nerve, specifically, nerve roots L5–S2.

For more information, see the articles on the gastrocnemius and soleus. The soleus muscle and surrounding structures, from Grays Anatomy. ...