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What is the function of the tibialis anterior?
The tibialis anterior muscle is the most medial muscle of the anterior compartment of the leg. It functions to stabilise the ankle as the foot hits the ground during the contact phase of walking (eccentric contraction) and acts later to pull the foot clear of the ground during the swing phase (concentric contraction). It also functions to 'lock' the ankle, as in toe-kicking a ball, when held in an isometric contraction. Antagonists are plantar-flexors of the posterior compartment such as soleus and gastrocnemius. Essentially, the movements of tibialis anterior are dorsiflexion and inversion of the ankle. However, actions of tibialis anterior are dependent on whether the foot is weight bearing or not (closed or open kinetic chain). When the foot is on the ground the muscle helps to balance the leg and talus on the other tarsal bones so that the leg is kept vertical even when walking on uneven ground.
Which muscle involoves dorsiflexion and inversion of the foot?
The anterior and posterior compartment of the leg Anterior compartment: - Tibialis Anterior - Extensor Digitorium Longus - Extensor Hallucis Longus Posterior compartment: Deep: - Tibialis Posterior - Flexor Digitorium Longus - Flexor Digitorium Brevis
What is the type of contraction in which the muscle fibers produce increased tension but does not shorten?
An isometric contraction builds tension but there is no joint movement.
What is the antagonist of plantarflexion?
Tibilias anterior.
Nerve supply of the tibialis anterior muscle?
deep peroneal nerve supplies the tibialis anterior muscle
What is the medical term meaning inflammation of the anterior tibialis tendon?
Anterior tibialis tendinitis is the medical term meaning inflammation o the anterior tibialis tendon. The condition causes ankle pain.
What is the antagonist of the tibialis anterior?
The antagonist of the tibialis anterior is the gastrocnemius and soleus muscles. These muscles work in opposition to the tibialis anterior by plantarflexing the foot, pointing the toes downward, while the tibialis anterior dorsiflexes the foot, bringing the toes upward.
Which muscle is the prime mover for foot inversion?
tibialis posteriorTibialis anterior and posterior tibialis posterior
What muscle is an antagonist to the gastrocnemius?
i believe its tibialis anterior
What action do tibialis anterior and posterior act as synergists?
It involves the medial cuneiform and 1st metatarsal of the ankle.
what's an isometric contraction?
An isometric contraction is when the muscle does not shorten and no movement results.
Which muscle opposes the gastrocnemius?
The tibialis anterior
