The motor cortex is a region in the brain responsible for planning, controlling, and executing voluntary movements. It is located in the frontal lobe, specifically in an area known as the precentral gyrus. This part of the brain sends signals to various muscles in the body, allowing for coordinated actions like walking, writing, and playing sports. The motor cortex is divided into different areas that correspond to specific body parts, a concept known as the homunculus. This means that certain regions of the motor cortex control movements in the hands, face, and legs, reflecting the complexity and precision of those movements.