POLL-EVIL 



The Poll 



The poll or nape of the neck of quadrupeds 

 having a long highly mobile neck and large 

 head is an important region. Although less 

 complicated from the anatomical standpoint 

 than the withers it is nevertheless composed of 

 a great many separate anatomical structures 

 and although more shallow than the withers 

 its relations to the large nerve centers makes 

 affections of the poll more or less dreaded from 

 the view point of disease and of surgery. The 

 structures involved in poll-evil are contiguous 

 to the coverings -of the spinal cord in the 

 atlanto-axoid space, to the occipito-atlantoid 

 articulation and finally to the meminges and 

 the brain. It is plain that no chronic patholog- 

 ical process so serious as poll-evil can so- 

 journ unchecked without sooner or later im- 

 plicating some of these structures if not all of 

 them. The surgical anatomy of the withers 

 does not include a trochoid articulation and its 

 relations to the sjiinal cord are more remote. 



The surgical anatomy of the poll includes, 

 the skin, the pad of the mane, the atlas, the 



