166- OUTLINES OF EQUINE ANATOMY. 



PAET y.— SPECIAL ANATOMY. 

 The Neck. 



From tlie incisiou along tlie central line of tlie front of 

 tlie neck tlie operator dissects tbe skin from ^panniculus 

 carnosus in an upward direction, it being moderately firmly 

 attached until it arrives at the collection of cellulo- 

 adipose material attached to the superior margin of 

 the ligamentum nuchse along the greater part of its. 

 length, which is somewhat intimately blended with the 

 skin. 



Extending from the root of the ear, parallel to the pos- 

 terior margin of the lower jaw, is parotideo-auricularis, 

 attached suj^eriorly to the conchial cartilage, and running 

 downwards to be attached to the surface of the parotid 

 salivary gland. It is covered by a thin layer of panniculus. 

 Behind the ear, along ligamentum nuchsa for about five 

 inches, are attached the retrahentes aurum muscles drawing 

 back the ear. 



Along the lower part of the neck the muscular fibres of 

 panniculus are distinct ; anteriorly some of them assume 

 a somewhat peculiar arrangement, running in a different 

 direction to the other fibres, in a distinct band, towards 

 the submaxillary space, meeting with the corresponding 

 fibres from the opposite side ; posteriorly the muscle be- 

 comes much increased in thickness, and sends some mus- 

 cular fibres to cover the anterior part of the connection of 

 pectoralis transversus with the cariniform cartilage ; its 

 main portion, however, extends over the shoulder with 

 levator humeri, with the tendinous j)art of which muscle it 

 blends, at the superior j)art of the neck, and so the pan- 

 niculus carnosus becomes indirectly attached to the supe- 

 rior margin of ligamentum nuchse. The splenius muscle 

 may be seen after removal of the skin through the superior 

 aj)oneurosis of the levator humeri. 



