Tibialis posterior
fibularis longusflexes and Evert the footFibularis brevis and Fibularis longus
The bottom of the foot is called the plantar surface. Plantar flexing is contracting the muscles of the foot so that the toes move down and the arch increases.
Plantar flexion is the act of flexing the muscles of the toe and foot toward the sole. the muscles involved in this process are often stretched which for some, can reduce heel pain and the pain caused by flat feet.
When you walk, there is plantar-flex-ion. So main function of foot is walking. So for planter-flex-ion you need more movement and power to lift the body weight. Power is provided by powerful muscles, those are Gastrocnemius and Sole-us muscles. (Calf muscles.) For Dorsiflexion you do not require much range of movement and power to lift a small body part, that is foot itself only.
The Gastrocnemius and the Soleus flexes the knee and the foot. The Plantaris is an unimportant muscle. Many people do not have it and doctors tend to use this muscle for tendon graphs.
The plantar aspect refers to the bottom surface of the foot. It is the side that comes into contact with the ground when standing or walking. This part of the foot contains structures like the plantar fascia, muscles, tendons, and ligaments.
The two lateral ankle muscles that create plantar flexion and eversion of the foot are the peroneus longus and peroneus brevis.
Structures located on the inferior surface of the foot include the plantar fascia, plantar muscles, and plantar ligaments. These structures provide support, stability, and flexibility to the foot, allowing for weight-bearing, walking, and other movements. The plantar fascia helps maintain the arch of the foot, while the plantar muscles and ligaments work together to absorb shock and propel the body forward during activities like walking and running.
Tibial nerves main function is to plantar flex and invert the foot
Peroneus (fibularis) longus muscle and Peroneus (fibularis) brevis muscle
In human anatomy, the fibularis longus (also known as peroneus longus) is a superficial muscle in the lateral compartment of the leg, and acts to evert and plantar flex the ankle.
The calcaneal tendon, also known as the Achilles tendon, attaches the calf muscles to the heel bone (calcaneus). Its main action is to plantarflex the foot, which means pointing the toes downward. This action is involved in walking, running, and jumping.