There are two: the tibialis anterior muscle aids in inverting the ankle and dorsiflexing the foot and the peroneus longus muscles aids in everting the ankle and plantarflexing the foot.
The prime mover in ankle dorsiflexion is the tibialis anterior muscle, which is located at the front of the shin. This muscle contracts to pull the foot upward, allowing for dorsiflexion of the ankle joint.
When you point your toes to the ground, the primary muscle that contracts is the gastrocnemius, which is part of the calf muscles. The soleus muscle, located underneath the gastrocnemius, also plays a significant role in this movement. Together, these muscles facilitate plantarflexion of the ankle, allowing your toes to point downward.
A muscle becomes shorter when it contracts.
When a muscle contracts, it shortens in length.
A muscle that contracts shortens whereas a muscle that relaxes lengthens.
When a muscle contracts, it pulls with a force generated by the muscle fibers contracting and shortening.
When one muscle in a pair contracts the other expands.
Ankle dorsiflexion is when the ankle is moved back towards the body. The muscles involved in this movement is the ankle extensor.
shortens
Flexion
Flexion
The muscle that contracts when the leg is extended at the knee is call the gastrocnemius muscle