transumbilical plane transumbilical plane the transumbilical plane or umbilical plane, one of the transverse planes in human anatomy, is a horizontal line that passes through the abdomen at the level of the navel (or umbilicus). in physical examination, clinicians use the transumbilical plane and its intersection with the median plane to divide the abdomen into four quadrants. transumbilical planethe main anatomical planes of the human body, including the median (red), parasagittal or paramedian (yellow), coronal (blue) and transverse (green). in this case, the transverse plane is a transumbilical plane because it passes through the navel.umbilicus (navel)detailsidentifierslatinplanum transumbilicalisanatomical terminology