214 THE SURGICAL ANATOMY OF THE HORSE 



wall, and the inguinal region. They may be described in three 

 groups : 



(a) A small group (or may be only a single gland) which is placed in 

 the angle between the two internal iliac arteries. 



(^) A group placed between the internal and external iliac arteries. 



(<:) A group placed around the roots of the spermatic and posterior 

 mesenteric arteries. 



