HP]AD AND NECK OF THE HORSE 



19 



the longissimus atlantis muscle and thus obtain insertion into the wing 

 of the atlas. The rest of its insertion is by an aponeurotic tendon 

 which blends with the longissimus capitis and brachio- cephalic muscles, 



2nd cervical nerve. 



M. splenius. 



N. accessorius. 



M. rhomboideus (cervicalis). 

 Mm. intertransversarii. 



N. auricularis magnus. 

 I 



M. longissimus cervicis 



A. transversa colli. i 



M. iliocostalis. [ i 



M. serratus dorsalis. I | i 



1 III 



I I I 



Parotid gland. 

 ' Ramus colli. 

 V. maxillaris externa. 



M. sternocephalicus. 



M. brachiocephalicus. 

 M omohyoideus. 



4th cervical nerve (ventral branch). 



5th cerMcal ner\e (\entral branch). 

 A. carotis communis. 

 1 'i M. scalenus. 

 \ V. jugularis. 

 , X. phrenicus (roots of). 



Truncus omocervicalis. 



A. axillaris 



Brachial plexus. 

 Fig. 8. — Dissection of the lateral aspect of the neck. Third stage. 



and thus finds attachment to the superior nuchal line of the occipital 

 bone and the mastoid part of the temporal. 



Dissection. — Make a traiisver-se incision through the splenius about 

 the middle of the neck and a longitudinal incision close to the ligamentum 

 nuchae. Then turn the two portions of the muscle downwards. 



M. LONGISSIMUS CERVICIS.— This muscle is ventral to the fore^oin^ 



