Three major groups of planes pass through the body in the anatomical position (Fig. 1.1).
Coronal planes are oriented vertically and divide the body into anterior and posterior parts.
Sagittal planes also are oriented vertically but are at right angles to the coronal planes and divide the body into right and left parts. The plane that passes through the center of the body dividing it into equal right and left halves is termed the median sagittal plane.