CRANIAL REGION. 



317 



4. Orbital Region. 

 Levator Palpebrse. 

 Rectus Superior. 

 Rectus Inferior. 

 Rectus Interims. 

 Rectus Externus. 

 Obliquus Superior. 

 Obliquus Inferior. 



6. Nasal Region. 

 Pyramidalis Nasi. 



Levator Labii Superioris Alseque Nasi. 

 Dilatator Naris Posterior. 

 Dilatator Naris Anterior. 

 Compressor Nasi. 

 Compressor Narium Minor. 

 Depressor Alee Nasi. 



6. Superior Maxillary Region. 

 Levator Labii Superioris. 

 Levator Anguli Oris. 



Zygomaticus Major. 

 Zygomaticus Minor. 



7. Inferior Maxillary Region. 

 Levator Labii Inferioris. 

 Depressor Labii Inferioris. 

 Depressor Anguli Oris. 



8. Intermaxillary Region. 



Orbicularis Oris. 



Buccinator. 



Risorius. 



9. Temporo- Maxillary Region. 

 Masseter. 



Temporal. 



10. Ptery go-Maxillary Region. 

 Pterygoideus Externus. 



Ptery goideus Intern us. 



1. CRANIAL REGION OCCIPITO-FRONTALIS. 



Dissection (Fig. 214). The bead being shaved, and a block placed beneath the back of the 

 neck, make a vertical incision through the skin from before backwards, commencing at the root 

 of the nose in front, and terminating behind at the occipital protuberance ; make a second in- 

 cision in a horizontal direction along the forehead and round the side of the head, from the an- 



Fig. 214. Dissection of the Head, Face, and Neck. 



terior to the posterior extremity of the preceding. Kaise the skin in front from the subjacent 

 muscle from below upwards ; this must be done with extreme care, on account of their intimate 

 union. The tendon of the muscle is best avoided by removing the integument from the outer 

 surface of the vessels and nerves which lie between the two. 



The superficial fascia in the cranial region is a firm, dense layer, intimately 

 adherent to the integument, and to the Occipito-frontalis and its tendinous apo- 

 neurosis ; it is continuous, behind, with the superficial fascia at the back part 

 of the neck; and, laterally, is continued over the temporal aponeurosis; it 

 contains between its layers the small muscles of the auricle, and the superficial 

 temporal vessels and superficial nerves. 



