174 MYOLOGY. 



Relation. Externally with the skin ; internally with the 

 bone. 



Action. Tt corrugates the skin of the upper eyelid, but is 

 scarcely a levator. 



LEVATOR PALPEBR.E SUPERIORIS INTERNUS. 

 ( Orbito-palpebra Us. ) 



Situated within the orbital fossa, in relation with the superior 

 straight muscle of the eyeball, this muscle is narrow, thin, and 

 band-like. 



Origin. From the superior border of the optic foramen, on a 

 level with the lachrymal gland, passing under which it becomes 

 aponeurotic, running between the conjunctiva and the fibrous 

 portion of the upper lid. 



Insertion. To the inner surface of the lid, and the tarsal 

 cartilage. 



Action. It raises the upper eyelid. 



AURICULAR GROUP. 



The external muscles of the ear consist of an extrinsic and an 

 intrinsic group. The extrinsic muscles, eight in number, are as 

 follows : 



Attollens maximus. 

 Attollens anticus. 

 Attollens posticus. 



Retrahens externus. 

 Retrahens medius. 

 Retrahens interims. 



Abducens. 

 Mastoido-auricularis. 



ATTOLLENS. MAXIMUS. 

 (Temporo-auricularis Externus. ) 

 (PL. IT. 2'.) 



Situated immediately under the skin, above the temporal 

 muscle, and in front of the inner side of the ear, it is broad, 

 thin, and fleshy. 



Origin. From the whole of the parietal crest, joining its 

 fellow in the median line posteriorly. 



Insertion. To the scutiform cartilage, sending a small baud 

 to the internal border of the base of the conchal cartilage. 



