Brain-body control. Illustration of a section through the cortex of the frontal lobe of the brain, showing the areas that control voluntary movements in parts of the body. An outline of the surface of the cerebral cortex is shown (blue). Areas of the brain are demarcated beside the body parts that they control. At upper right, the paracentral lobule is associated with the toes and lower limbs. Then anticlockwise from top right are the trunk, shoulder, elbow, wrist, hand and fingers, and parts of the face, including the eyes, lips and jaw. At bottom left are the tongue and throat. The skill to move and control these body areas is proportional to the amount of brain area involved.