Chap. VI.] NOSE AND NASAL CAVITIES. 71 



upon the tenseness of the part, which prevents it from 

 swelling without producing much pressure upon the 

 nerves, while the engorgement depends upon the free 

 blood-supply of the region, and the fact that the edge 

 of the nostril being a free border, the circulation there 

 is terminal, and apt therefore to favour congestion. 



The great number of sebaceous glands about the 

 lower part of the nose renders it a favourite spot for 

 acne. It is here that the form of acne termed acne 

 hypertrophica is met with ; a condition that produces 

 the appearance known as " grog-blossoms." The nose, 

 too, is frequently attacked by lupus, and it is indeed 

 over the dorsum of the nose that lupus erythematosus 

 is most commonly met with. Rodent ulcer also is apt 

 to appear in this region, especially in the fold between 

 the ala of the nose arid the cheek. 



The integument of the nose is very well supplied 

 with blood, and for this reason the part is well suited 

 for the many plastic operations that are performed 

 upon it. Wounds in this region heal kindly, and even 

 the extensive wound made along the line between the 

 nose and the cheek in removal of the upper jaw leaves 

 very little deformity. In many reported cases portions 

 of the nose have been entirely severed, and have 

 united to the face on being immediately re-applied. 

 In spite of its full blood-supply, the nose, for reasons 

 already given when speaking of the pinna (page 63), 

 is prone to gangrene from exposure to severe cold. 

 A specimen in the museum of the Royal College of 

 Surgeons illustrates a remarkable form of gangrene of 

 the nose. The specimen is the larynx of a man who 

 cut his throat, and lost a great quantity of blood. 

 Before he died his nose sloughed. 



The skin over the root of the nose is supplied by 

 the nasal branch of the first division of the fifth ; as 

 is also the skin over the alse and in the region of the 

 nostril. The middle or greater part of the side of the 



