An interactive Flash diagram of the human brain, explaining the terms for various anatomical views of the central nervous system—unlike for the rest of the body, terms of orientation for the CNS are defined in relation to the ground. Thus, a ventral view is a view of the structure from below. The CNS is usually cut In one of three different planes of section when it is being studied or radiographed, and those planes and terms are illustrated here: the sagittal plane, the coronal plane, and the horizontal plane.