158 



STUDENTS HISTOLOGY 



FIG. 104. DIAGRAM SHOWING PORTIONS OP INTESTINAL Mucous MEMBRANE CON- 

 CERNED IN THE SECRETION OP THE Succus ENTERICUS. 



A. The mucosa. 



B. Muscularis mucosaa. 



C. Submucosa. 



D. D, D. Villi. 



E. Crypts of Lieberkiihn. 

 G. Blood-plexuses of villi. 



H, H. Large vessels of submucosa, supplying the epithelium covering the villi. 



I. Neck of a gland of Brunner. 



J. Gland of Brunner in the submucosa. 



THE REMAINING STRUCTURES OF THE INTESTINE CONCERNED 

 MAINLY IN FOOD ABSORPTION 



The diagram (Fig. 105) is intended to show the same layers as 

 were indicated in the previous figure (Brunner 's glands and the 

 blood-vessels have been omitted in order to avoid confusion). The 

 villi are represented much shortened. 



