1016 THE DIGESTIVE SYSTEM. 
When the stomach is distended, the first inch of the duodenum—which is movable on account 
of its complete peritoneal covering—is carried to the right with the pylorus, and thus brought 
into line with the second or terminal half, which is always directed backwards. Hence the 
whole of the first portion of the duodenum is directed backwards when the stomach is full. 
The second or descending portion (pars descendens) begins at the neck of the gall- 
Aorta 
Fossa for Spigelian lobe 
Right phrenic vessels (Hsophagus 
Vena cava Coronary artery 
Hepatic vein Diaphragm 
Hepatic artery Left suprarenal body 
Portal vein 
Pylorus 
Bile duct 
Right suprarenal body 
Splenic artery 
Kidney 
Upper surface of pancreas 
Gastric surface of spleen 
Under surface 
of pancreas 
Attachment of 
transverse 
mesocolon 
Duodeno- 
jejunal flexure 
Gastro-duodenal 
artery and neck 
of pancreas 
Superior mesen- 
Head of 4 
pancreas 
Superior ~~ 
mesenteric 
vein : 
teric artery 
Ureter f 
A 5 z; Duodenum 
Inferior mesen 
teric artery 
Spermatice vein 
Ureter 
Ureter 
Right commion iliac 
vein 
\ 
: a a72.98 
Right common iliac_ aa Colon 
artery 
Left common iliac 
vein 
Fic. 687.—THE VISCERA AND VESSELS ON THE POSTERIOR ABDOMINAL WALL. 
The stomach, liver, and most of the intestines have been removed. The peritoneum has been preserved on the 
right kidney, and the fossa for the Spigelian lobe. In taking out the liver, the vena cava was left . 
behind, The stomach-bed is well shown. (from a body hardened by injection of chromic acid.) 
bladder, passes down behind the transverse colon, and ends at the right side of 
the third or fourth lumbar vertebra. In length it measures 34 or 4 inches (8°7 to 
10 cm.). 
“In front, it is crossed about its middle by the beginning of the transverse colon 
(Fig. 688). Above the colon, it is in contact with the narrow end of the gall-bladder 
