Triceps surae muscle

The Triceps surae muscle (pronunciation: /traɪˈsɛps ˈsʊəriː/) is a pair of muscles located in the posterior compartment of the lower leg, specifically in the calf. It is composed of two muscles, the gastrocnemius muscle and the soleus muscle, which both converge to form the Achilles tendon.

Etymology

The term "Triceps surae" is derived from Latin, with "triceps" meaning "three-headed" and "surae" referring to the calf. This name is given due to the muscle's three distinct heads: two from the gastrocnemius and one from the soleus.

Function

The primary function of the triceps surae muscle is to facilitate plantar flexion of the foot at the ankle joint. This action is crucial for activities such as walking, running, and jumping. Additionally, the triceps surae assists in stabilizing the leg when standing.

Related Terms

Gastrocnemius muscle: One of the two muscles that make up the triceps surae. It has two heads and is the most superficial.
Soleus muscle: The other muscle that forms the triceps surae. It is located deep to the gastrocnemius.
Achilles tendon: The tendon formed by the convergence of the gastrocnemius and soleus muscles. It attaches the triceps surae to the heel bone.
Plantar flexion: The movement facilitated by the triceps surae, involving the bending of the foot or toes downward toward the sole.
Ankle joint: The joint at which the triceps surae enables plantar flexion.

External links

Medical encyclopedia article on Triceps surae muscle
Wikipedia's article - Triceps surae muscle

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Triceps surae muscle