RECTUS CAPITIS ANTICUS MAJOR. 



705 



inted anterior common ligament of the vertebrae separates the 

 ro. The outer border is contiguous to the anterior scalenus, to 

 vertebral vessels, and to the rectus capitis anticus major. The 

 Dumber and attachments of the slips of this muscle are subject to 

 it variation. 



it. Both muscles bend forwards the neck ; and the upper use. 

 iblique part of one may rotate the head to the same side. 

 The RECTOS CAPITIS ANTICUS MAJOR (B) is external to the preceding Rectus 

 suscle, and is largest at the upper end. Its origin is by pointed majo"; 8 

 ?ndinous slips from the anterior tubercles of the transverse processes origin; 



FIG. 



250. DEEP MUSCLES OP THE FRONT OF THE NECK, AND 

 THE SCALENI. 



A. Longus colli. 



B. Rectus capitus anticus major, 

 c. Scalenus anticus. 



D. Scalenus medius. 

 v. Scalenus posticus. 

 G. Rectus capitis anticus minor. 



of the third, fourth, fifth, and sixth cervical vertebrae ; and the fibres insertion ; 

 ascend to be inserted into the basilar process of the occipital bone 

 by the side of the pharyngeal tubercle, reaching from the middle line 

 to the petrous portion of the temporal bone. 



This muscle partly conceals the longus colli and rectus anticus relations; 

 minor. Its anterior surface is in contact with the pharynx, the 

 internal and common carotid arteries, and the sympathetic nerve. 

 The origin from the cervical vertebrae corresponds with that of the 

 scalenus anticus. 



Action. It flexes the head and the cervical portion of the spine, use. 



D.A. Z Z 



