These five transverse sections through the navel clearly display the relationship between the navel and the iliac crests of the hip bones. The sequence of these corporal sections is in transcendent order, representing the order in which the plane of the present engages the navel and hip bones as it steadily moves upward. The bottom section is the initial engagement of the navel and the top section is the final engagement of the navel. Note that as the plane of the present rises through the navel the presence of the hip bone crests diminish to the point of "non-presence" (as indicated between the parallel lines).
These transverse sections of the human are derived from The Visible Human Project utilizing the NPAC Visible Human Viewer. Referred to there as axial views, these sections represent axial views 730, 735, 740, 745, and 750 respectively from top to bottom.
Since the male corpse used in the Visible Human Project is that of an overwieght man, the relationship between the navel and the iliac crests of the hip bones is slightly out of synch. Normally, the "disappearance" of the hip bones aligns with the center of the navel.