696 



ORGANS OF SENSE. 



1. Those which connect it with the side of the head, moving the pinna as a 

 whole, viz., the Attollens Aurem, Attrahens Aurem,, and Eetrahens Aurem 

 (p. 319); and the proper muscles of the pinna, which extend from one part of 

 the auricle to another. These are, the 



Helicis Major. Antitragicus. 



Helicis Minor. Transversus Auriculas. 



Tragicus. Obliquus Auris. 



The Helicis Major is a narrow, vertical band of muscular fibres, situated 

 upon the anterior margin of the helix. It arises, below, from, the tubercle of 

 the helix, and is inserted into the anterior border of the helix, just where it is 

 about to curve backwards. It is pretty constant in its existence. 



Fig. 377. The Muscles of the Pinna. 



The Helicis Minor is an oblique fasciculus, attached to that part of the helix 

 which commences from the bottom of the concha. 



The Tragicus is a short, flattened band of muscular fibres situated upon the 

 outer surface of the tragus, the direction of its fibres being vertical. 



The Antitragicus arises from the outer part of the antitragus ; its fibres are 

 inserted into the processus caudatus of the helix. This muscle is usually very 

 distinct. 



The Transversus Auriculse is placed on the cranial surface of the pinna. It 

 consists of radiating fibres, partly tendinous and partly muscular, extending 

 from the convexity of the concha to the prominence corresponding with the 

 groove of the helix. 



The Olliquus Auris (Todd) consists of a few fibres extending from the upper 

 nnd back part of the concha to the convexity immediately above it. 



The arteries of the pinna are, the posterior auricular, from the external carotid ; 

 the anterior auricular, from the temporal ; and an auricular branch from the 

 occipital artery. 



The reins accompany the corresponding arteries. 



The nerves are, the auricularis rnaguus, from the cervical plexus; the posterior 



