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Triceps surae
The triceps surae is 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 form 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.
The triceps surae is innervated by the tibial nerve, specifically, nerve roots L5–S2.
See also
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List of muscles of lower limbs |
| ILIAC REGION/ILIOPSOAS |
psoas major/psoas minor - iliacus |
| BUTTOCKS |
gluteals: (maximus, medius, minimus) - tensor fasciae latae
lateral rotator group: piriformis - obturator externus/obturator internus - inferior gemellus/superior gemellus - quadratus femoris |
| THIGH |
anterior compartment: sartorius - quadriceps (rectus femoris, vastus lateralis, vastus intermedius, vastus medialis) - articularis genu
posterior compartment/hamstring: biceps femoris - semitendinosus, semimembranosus
medial compartment: gracilis - pectineus - adductor (brevis, longus, magnus) |
| LEG |
anterior compartment: tibialis anterior - extensor hallucis longus - extensor digitorum longus - fibularis tertius
posterior compartment: superficial - calf/triceps surae (gastrocnemius, soleus) - plantaris - deep - popliteus - tarsal tunnel (flexor hallucis longus, flexor digitorum longus, tibialis posterior)
lateral compartment: fibularis muscles (longus, brevis) |
| FOOT |
dorsal - extensor digitorum brevis - extensor hallucis brevis
plantar - 1st layer (abductor hallucis, flexor digitorum brevis, abductor digiti minimi) - 2nd layer (quadratus plantae, lumbrical muscle) - 3rd layer (flexor hallucis brevis, adductor hallucis - flexor digiti minimi brevis) - 4th layer (dorsal interossei, plantar interossei) |
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This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Triceps_surae". A list of authors is available in Wikipedia.
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