Amber Lankhorst Human Anatomy Notes: Body Planes and Regions- The left image shows three key anatomical planes of study: frontal, or coronal; transverse, or horizontal; and sagittal. The frontal plane is drawn through the body longitudinally, dividing the body into anterior and posterior portions. The transverse plane is drawn horizontally through the body, dividing it into superior and inferior parts. The sagittal plane is drawn through the body longitudinally, dividing it into left and right sides In the right image, terms of orientation are provided for comparison purposes. Superior refers to structures that are closest to the top of the skull. Inferior refers to structures closest to the plantar surface of the foot. Cranial relates to the head.