The frontal plane divides the body into which portions?

• A. Front and back portions
• B. Left and right portions
• C. Upper and lower portions
• D. Interior and exterior portions

Answer: (A)

The frontal plane, also called the coronal plane, runs vertically from head to toe and separates the body into anterior (front) and posterior (back) portions. This orientation explains why movements like abducting or adducting a limb occur within this plane—the limb moves toward or away from the front of the body rather than side-to-side. In contrast, left and right are separated by the sagittal plane, and upper and lower portions by the transverse (horizontal) plane. Interior and exterior aren’t standard divisions of the body by a plane.