AND PHYSIOLOGY. 163 



Fig. IU. 



Liver. Pylorus. Gullet. Pancreas 



f j \ 



Small Intestine. Rectum. 



Digestive Apparatus in Man. 



302. Structure of Intestines, Intestinal Glands,— Like 



the Stomach, the Intestines are formed by three membranes. 

 Also in the inner or mucous membrane are situated an im- 

 mense number of microscopic glands, so that a French teacher 

 speaks of them existing 4 ' as numerous as the stars in the 

 starry heavens." They are distinguished as Duodenal Glands, 

 Brunner's Glands, Solitary Glands, Peyer's Patches, and 

 Follicles of Lieberkuhn. (Fig. 175, p. 164.) They are 

 most abundant along the course of the Ileum and they seem 

 to be especially affected in Typhoid Fever, although no cer- 

 tain use for them in health has as yet been discovered. The 



302. What is the structure of the Alimentary Tube ? What is said of the Glands found 

 in its mucous lining ? State their names. 



