What is the difference between plantar flexion and dorsiflexion in terms of movement and function?

Plantar flexion is the movement of pointing the foot downward, like when you stand on your tiptoes. Dorsiflexion is the movement of pulling the foot upward, like when you flex your ankle. Plantar flexion helps with actions like walking and running, while dorsiflexion is important for activities like lifting your foot to clear obstacles.