FACE AND FRONTAL REGION OF HEAD 117 



HEAD AND NECK. 



THE dissectors of the Head and Neck begin work as soon 

 as the subject is brought into the room. During the first 

 three days, whilst the body is in the lithotomy posture, they 

 dissect the face, the anterior part of the eyelids, the superficial 

 part of the nose, and the anterior part of the scalp. During 

 the following five days, when the body is lying on its back, 

 they dissect the posterior triangle, and complete the dissection 

 of the scalp. 



It is only by dissecting the face at this period, whilst 

 the parts are in good condition, that the dissector can 

 gain any satisfactory idea of its component parts ; and it is 

 essential that the contents of the posterior triangle, which 

 is such an important surgical region, should be displayed 

 before the dissector of the arm has disturbed its posterior 

 boundary. 



The first day should be devoted to the examination of the anterior part 

 of the frontal region of the head and the face, the study of the surface 

 anatomy of the ocular appendages, the reflection of the skin, and the clean- 

 ing of the superficial muscles of the face and anterior part of the scalp. 

 On the second day the dissectors should display the superficial surface of 

 the parotid gland ; they should also find and clean the superficial vessels 

 and nerves, and trace them to their terminations. On the third day the 

 superficial muscles must be reflected, and the deeper vessels and nerves 

 must be exposed and cleaned, and the auricle should be examined and 

 dissected. On the fourth day, when the body has been placed upon its 

 back, the dissectors should commence the dissection of the posterior 

 triangle of the neck, and should complete that part of the dissection in 

 three days. On the seventh day they should complete the examination 

 of the scalp. The eighth day should be devoted to a final study of the 

 brachial plexus in association with the dissectors of the upper extremity. 



FACE AND FRONTAL REGION OF HEAD. 



The dissectors should commence the study of the face and 

 frontal region by an examination of the bony prominences 

 and ridges in the area to be dissected. 



In the centre of the facial area is the prominent outer 

 portion of the nose, consisting of a lower mobile part formed 

 mainly by skin and cartilage, and an upper rigid portion 

 formed by the nasal bones and the frontal processes of 



