1634 



HTMAX ANATOMY. 



circumference is greatest in the duodenum (not always at the same point), beyond 

 uhicT it gradually decreases, the diameter of the gut at its lower end being nearly 

 one-third smaller than at the beginning. Since certain structural f *'?" 



non to the entire small intestine, it will be convenient to consider these in this place, 

 further details being given with the descriptions of the special parts. 



Liver 



Transverse coloi 



FIG. 1383. 



Falciform ligament 



Stomach 



Greater omentum (cut 

 surface) 



Coils of jejunum 



Descending colon 



Sigmoid flexure 



Abdominal organs of formalin subject. Stomach was unusually large, giving an exaggerated impression of its 



ti.msverse position. 



Structure. The small intestine, as other parts of the alimentary tube below 

 th<- diaphragm, consists of four coats, the nincoits, the subwncoits, the muscular, and 

 rvttf. 



1 In- mucous coat, in addition to the glandular structures, possesses folds and 

 villi that not "iily ^i-eatly iixTease it-- >urfaee. Imt also contribute peculiarities which 

 ai<l in differentiating between typical portions taken from various regions. The 



