SPLANCHNOLOGY 



imaginary planes the abdomen is divided into three zones, which are named from 

 above downward the subcostal, umbilical, and hypogastric zones. Each of these is 



Fia. 1034. Front view of the thoracic and abdominal viscera, a. Median plane. 6 6. Lateral planes, c c. Trans , 

 tubercular plane, d d. Subcostal plane, e e. Transpyloric plane. 



