172 THE ESSENTIALS OF HISTOLOGY. 



mucous membrane, pierce the muscularis mucosae, and join a plexus of 

 veins in the submucous tissue. From these veins blood is carried 

 away from the stomach by efferent veins, which accompany the- enter- 

 ing arteries. 



The lymphatics (fig. 202, B) arise in the mucous membrane by a 

 plexus of large vessels dilated at intervals, and looking in sections like 

 clefts in the interglandular tissue. From this plexus the lymph is 

 carried into larger valved vessels in the submucous coat, and from 

 these, efferent vessels pass through the muscular coat to reach the 

 serous membrane, underneath which they pass away from the organ. 

 The muscular coat has its own network of lymphatic vessels. These 

 lie between the two principal layers, and their lymph is poured into 

 the efferent lymphatics of the organ. 



The nerves have the same arrangement and mode of distribution 

 as those of the small intestine (see next Lesson). 



