962 



THE ORGANS OF DIGESTION. 



To recapitulate : 



Right Hypochondrium . 

 Liver. 



Right Lumbar. 

 Right kidney. 

 Small intestines. 

 Ascending colon. 



Right Iliac. 

 Caecum. 



Epigastrium. 

 Liver. 

 Stomach. 



Umbilical Region. 

 Great omenturn. 

 Small intestines. 

 Mesentery. 



Pubic. 

 Bladder. 



Left Hypochondria > n. 

 Greater part of stomach. 

 Spleen. 



Splenic flexure of colon. 

 Great omentum. 



Left Lumbar. 

 Left kidney. 

 Small intestines. 

 Descending colon. 



Left Iliac. 

 Part of sigmoid flexure. 



Fig. 579 gives a posterior view of the abdominal cavity, showing a vertebral 

 region and the two lateral regions of the mesogastric zone continued posteriorly, 

 the right and left lumbar. There are to be seen the outlines of the kidneys, the 

 spleen, the ascending and descending colons. The dotted line meeting the ver- 

 tebral column at the eleventh rib is the lower lung limit ; the line at the twelfth 

 rib is the lower pleural limit. The vertebral region includes the vertebral column 

 and part of the Quadratus lumborum muscles. 



THE PERITONEUM. 



Let us now suppose the student has finished the dissection of the antero- 

 lateral abdominal wall, has studied the anatomy of inguinal and femoral hernia, 

 the sheath of the Rectus muscle, and has seen the adminiculum linea; albce. The 

 semilunar folds of Douglas are before him, and he is ready to incise the trans- 

 versalis fascia and the parietal peritoneum. 



The Recti muscles should have been cut transversely a little below the umbil- 

 icus and both turned down together from their sheath without dividing the linea 

 alba. 



FIG. 580. Posterior view of the Recti abdominis muscles. (Luschka.) 



Behind the Recti on the lower and posterior part of the linea alba is a trian- 

 gular band of fibrous tissue called adminiculum linece albce (adminiculum, " prop 

 on which a vine grows ") (Fig. 580, 4). It passes up 4 or 5 cm. to strengthen the 



