THE ARTERIES 151 



turns forwards beneath the nerve-chain, supplying the 

 sternal region of the thorax, and the appendages from 

 the hindmost ambulatory legs to the mandibles. 



a. The ventral abdominal artery is a large median 

 vessel given off by the sternal artery on reaching 

 the ventral region of the body. It runs back- 

 wards beneath the nerve-chain, and supplies the 

 ventral region of the abdomen and the abdominal 

 appendages. 



The dorsal abdominal artery is a large median artery 

 arising from the ventral part of the hinder end of 

 the heart, and running backwards just above the 

 intestine to the hinder end of the body, supplying 

 the intestine, muscles, and other parts of the dorsal 

 region of the abdomen. 



