ABDOMINAL CAVITY 



273 



the gall-bladder; there it turns downwards and disappears 

 from view behind a portion of the large intestine called the 

 transverse colon. To trace it further, turn the greater 

 omentum upwards over the lower part of the thoracic wall 

 and expose the area below and behind the omentum. The 

 central and greater portion of that area is filled with coils 



Stomach 

 I Transpyloric 



Ascending 

 colon 



Subcostal plane 

 Umbilicus 



Intertubercular 

 "plane 



Iliac colon 



Left lateral 

 "~\~ plane 



FIG. 128. The Abdominal Viscera, as seen from the front, after removal of 

 the greater omentum. The dark lines indicate the subdivision of the 

 abdominal cavity. (Birmingham.) 



of the small intestine, but at the lateral and upper borders 

 of the area portions of the large intestine are seen. 



A mere glance is sufficient to distinguish the small from 

 the large intestine. The chief points of difference are 

 (i) The wall of the small intestine is smooth and uniform, 

 whereas the wall of the large intestine is puckered and 

 sacculated. (2) The longitudinal muscle fibres in the wall of 



VOL. II 18 



