Final answer:
Contraction of the calf muscles leads to plantar flexion of the foot, pointing the toes downward and lifting the heel off the ground.
Step-by-step explanation:
Contraction of the calf muscles, specifically the gastrocnemius and soleus muscles, causes plantar flexion of the foot. This action involves lifting the heel from the ground or pointing the toes downward and occurs at the ankle joint, which is a joint. Unlike dorsiflexion, which lifts the front of the foot toward the anterior leg, plantar flexion moves in the opposite direction. Eversion and inversion, on the other hand, are movements that involve multiple plane joints among the tarsal bones and are not associated with the movement of the ankle joint itself.