36(> MUSCLES. 



The Corrugator Super citti. 



This muscle is placed beneath the upper margin of the or- 

 bicularis, at its internal extremity; by which, and by the adja- 

 cent portion of the occipito-frontalis, it is concealed. 



It arises from the internal angular process of the os frontis, 

 and going outwards and a little upwards, its fibres are lost in 

 the inferior margin of the occipito-frontalis and in the superior 

 of the orbicularis. 



It draws the eyebrow and the skin of the forehead into ver- 

 tical wrinkles, and also draws them over the eye so as to over- 

 shadow it. 



The Levator Labii Superioris et Alec Nasi, 



Is fixed just at the side of the nose. It arises by a pointed 

 production from the nasal process of the superior maxillary 

 bone at the internal canthus of the eye, and by a broad origin 

 from the anterior margin of the orbitar process of the same 

 bone. Passing downwards, it is inserted into the side of the ala 

 nasi, and into the upper lip, being narrower below than above. 

 The part of this muscle which comes from the orbitar process 

 is so distinct, that Albinus and the continental anatomists give 

 it the exclusive name of Levator Labii Superioris. 



It draws the upper lip and the ala nasi upwards. 



Just beneath this muscle there is sometimes a fasciculus, 

 called the Anornalus Faciei of Albinus, which is attached by 

 one end to the upper jaw near the canine fossa, and by the 

 other to the upper lip. 



The Levator JJnguli Ori&, 



Is a small muscle, concealed very much by the last; it arises 

 from the anterior part of the superior maxillary bone, between 

 the foramen infra-oibitarium and the first small grinder, and is. 

 inserted into the corner of the mouth. 



It raises the angle of the mouth. 



