170 



MUSCLES OF THE HEAD AND NECK. 



many persons, however, there is only a partial control over the action of these 

 muscles, limited to the elevation of the eyebrows and horizontal wrinkling of the 

 forehead. 



AURICULAR MUSCLES. Besides minute bundles of muscular fibres which 

 pass from one part of the pinna of the auricle to another, and which will be 



Fig. 153. 



Fig. 153. SUPERFICIAL VIEW OF THE MUSCLES ON THE LEFT SIDE OF THE HEAD AND 

 NECK (slightly altered from Bourgery). 



a, cranial aponeurosis ; 6, superior curved line of the occipital bone ; c, ramus of the 

 lower jaw; d, lower edge of the hyoid bone; e, head of the clavicle. 1, anterior or frontal, 

 and 1', posterior or occipital part of the occipito-frontalis muscle; a, the aponeurotic covering 

 of the cranium extending between the two portions of the muscle; 2, superior auricular; 2', 

 anterior auricular; 3, posterior auricular in two fasciculi ; 4, is placed in front of the temple 

 close to the outer part of the orbicularis palpebrarum; 5, pyramidalisnasi; 6, triangularis 

 nasi or compressor naiium ; 7, levator labii supcrioris aloeque nasi ; 8, orbicularis oris ; 



