The "Planes of the Body" are imaginary lines that divide the body into sections, helping to describe movements and locations. The three main planes are the sagittal plane, which divides the body into left and right halves; the frontal plane, which separates the front and back; and the transverse plane, which cuts the body into upper and lower parts. These planes are essential in fields like anatomy and physiotherapy, as they provide a framework for understanding how the body moves. By using these planes, professionals can better analyze movements and develop effective treatment plans for patients.