408 



THE MUSCLES AND FASCIA. 



ligamentum nuchae and to the spinous process of the seventh cervical vertebrae, 

 and, passing forward, invests the Trapezius muscle ; from the anterior border of 



OMO-HYOID. 



Thyroid body. 



Common carotid artery. 

 Internal jugular vein. 



STERNO-MASTOID-v 



Pneumogas- j 

 trie nerve, j '"--- 



External ] 

 jugular \ 

 vein. ) 



- Anterior jugular vein. 



,. STERNO-HYOID. 

 STER NO-THYROID. 



Trachea. 



- (Esophagus. 



...LONGUS COLLI. 



6th cervical. 

 Vertebral vessels. 



--SEMI-SPINALIS COLLI. 



TRAPEZIUS. 



COMPLEXUS. 

 -SPLENIUS CAPITIS. 



FIG. 275. Section of the neck at about the level of the sixth cervical vertebra, showing the arrangement of 

 the deep cervical fascia. 



this muscle it forms a layer which covers in the posterior triangle of the neck ; 

 and, passing forward to the posterior border of the Sterno-mastoid muscle, divides 

 into two layers, one of which passes over, and the other under, that muscle. 

 The layer which passes over the muscle is continued forward to the front of 

 the neck, and blends with the fascia of the opposite side, covering the anterior 

 triangle. It is joined on its under surface, except for about an inch below, by a 

 lamella derived from the layer covering the deep surface of the Sterno-mastoid 

 muscle. Where these two layers do not meet a little space is left between them, as 

 they both pass inward .to the middle line of the neck. This is Burns 's space, and 

 contains a little areolar tissue and fat, ;i,nd occasionally a small lymphatic gland. 

 If traced upward, the anterior layer of the cervical fascia is found to pass across 

 the parotid gland and Masseter muscle, forming the parotid and masseteric fascice, 

 and is attached to the lower border of the zygoma, and, more anteriorly, to the lower 

 border of the body of the jaw ; if traced downward, it is seen to pass to the upper 

 border of the clavicle and sternum, being pierced just above the former bone by the 

 external jugular vein. In the middle line of the neck the fascia is connected to the 



