THE HEAD AND NECK. 



33 



The Orbicularis Oris. Remove the skin around the mouth and expose this 

 muscle. (Fig. 14.) This muscle has a rather strong'fascial attachment to the 

 alveolus of the superior maxilla. ^ 



The zygomatici major and minor (Fig. 14) arise from the malar bone, and 

 are inserted into the outer part of the upper lip. 



The levator labii superioris alaeque nasi is inserted into the wing of the 

 nose and the upper lip. It arises from the nasal process of the superior maxilla, 

 on the margin of the orbit. 



Corrugatpr 

 supercilii 



Pyramidalis 



Levator labii 



superioris 



alaeque naai 



Levator labii 



superioris 



Compressor 



narium 

 Levator anguli 



oris 



Naso-labialis 

 Depressor alae 



nasi 

 Orbicularis oris 



Buccinator 



Depressor 



anguli oris 



Depressor labii 



inferioris 

 Levator inenti 

 Mylo-hyoid 



Anterior belly of 

 digastric 



Temporal 



Zygomaticua 

 major 



Posterior belly 

 of digastric 



Splenius capitis 



Stylo-hyoid 



Sterno-maatoid 



Levator anguli 

 scapulae 



Scalenus 

 medius 



Scalenus anticus 



FIG 13 THE DEEPER LAYER OK THE MUSCLES OF THE FACE AND NECK. 



The Orbicularis palpebrarum surrounds the base of the orbit. It consists 

 of two sets of fibres. One, called the palpebral, covers the palpebra> or lids ; the 

 other is external to this, and blends above with the occipto-frontalis muscle. It 

 has, internally, a firm, triple attachment to the internal angular process of the 

 frontal bone, and to the nasal process of the superior maxilla. Between these 

 two you will find a short, stout tendon that can be mistaken for nothing else 

 the tendo oculi or tendo palpebrarum. Figure 10 shows its origin from the nasal 

 process of the superior maxilla in front of the lachrymal groove. Trace the 

 tendon toward the upper and lower lids and observe how it divides. 



