THE HEAD AND NECK 



1 195 



Nerve-supply. — The facial nerve. 



Blood-supply of the Auricle.— The arteries are derived from 

 (i) the posterior auricular branch of the external carotid. {2) the 

 anterior auricular branches of the superficial temporal, and (3) the 

 deep auricular branch of the first part of the internal maxillary, 

 the last named giving offsets to the cartilaginous part of the meatus 

 auditorius externus. 



The veins terminate in the posterior auricular, superficial tem- 

 poral, and internal maxillary veins, and one or two of them may 

 open into the mastoid emisscury vein. 



,..j\^^'rlt;,, 



(I i jj { / ; Attollens Auriculam 



TTTlTJll '" 



^Attrahens Auriculam 



/^Mu -cuius Obliquus Auriculae 

 jRfiw^ Eminence of Concha 



External Auditory 

 Meatus 



Processus Caudatus of Helix 



Fig. 486. — The Inner Surface of the Left Auricle and its 

 Muscles (Arnold). 



The lymphatic vessels of the inner surface of the auricle pass chiefly 

 to the mastoid, or posterior auricular, glands ; but a few end in the 

 superior deep cervical glands. The lymphatics of the lobule pass to 

 (i) the superficial cervical, or external jugular, glands, and (2) the 

 superior deep cervical glands. The lymphatics of the outer surface 

 of the auricle pass to the superficial parotid, or anterior auricular, 

 lymphatic glands. 



Nerve-supply. — The inner surface receives three cutaneous nerves, 

 as follows: the great auricular supplies about the lower three- 

 fourths, the small occipital about the upper fourth, and the 

 auricular branch (Arnold's nerve) of the pneumogastric supplies 



