

////: APPARATUS "/' 7///: >r\s/;> 



nut join i>n the median liuo, but arc placed at tbc sidrs of tin- hct'l. In-low 

 the horns.) 



8. SOCTO-AUBICULAHIS ExTKRNUS (anterior conchas Perdrull. Kij. :596). 

 This muscle may be said to bo a dependency of the pn -ci din^, whose 

 action it transmits to the conchal cartilage, and renders it more complete. 



Extending from the external face of the scutiform cartilage to the inner 

 side of the concha, and generally composed of two fasciculi, it is covered by 

 the skin and the conchal band of the external temporo-auricularis, while it 

 covers part of the internal scuto-auricular muscle. 



I'i-. 398. 



MUSCLES OF THE EAR. 



1, Cervico-auricularis superficial ; 2, Temporo-auricularis internus ; 3, 4, Teni- 

 poro-auricularis externus; 5, Scutiform cartilage; 6, Scuto-auricularis externus; 

 7, Posterior auricular artery ; 8, Portion of the zygomatico-auricularis ; !>. ()rl>it.-il 

 process; 10, Temporo-auricularis internus ; 11, Temporal muscle; 12, Scutiform 

 cartilage; 13, Ditto; 14, Concha of the ear ; 15, Scuto-auricularis externus ; I*;, 

 Internal scuto-auricularis ; 17, Parotido-auricularis ; 18, Corrugator supercilii ; 

 19, Zygomatico-auricularis. 



When this muscle contracts, it principally participates in producing the 

 rotatory movement that carries the opening of the concha outwards. 



4. CEEVICO-AURICCLARKS. (Percivall apparently makes one muscle of 

 these three the retralientes aurem ; Leyh designates them as the ccrn'<-<- 

 auriculares externus, meclim, and internus. (Fig. 31)6). Three in number, 

 and situated behind the ear, these muscles are broad, thin bands, extending 

 from the cervical ligament to the conchal cartilage. With regard to their 

 superposition at their origin, they may be distinguished as superficial, middle, 



