ABDOMEN AND PELVIS 



481 



Use models for the study of the position and relations. The 

 viscera soon lose their characteristic shapes and relations in 

 the cadaver, unless they have been hardened in situ by the injec- 

 tion of some hardening fluid, such as formalin. 



Are the loops of the intestinum tenue mesenteriale arranged 



FIG. 252. 



1,2 



Usual position of the mesentery. Cf. Fig. 251. (After Mall, ibid., Plate v., Fig. 17.) 



in any definite order? Can you find in the model a superior 

 group directly underneath the colon and passing transversely 

 across the abdominal cavity, two vertical groups situated on 

 either side of the vertebral column, and an inferior group within 

 the small pelvis and passing transversely across it? Note that 



31 



