Muscles of the Xeck. 



r> 



M. longus cai)itis 



(cut through and 



turned laterahvard) 



M. longus colli 



305. Anterior 



muscles of the 



cervical spine on 



the right side. 



259 



Processus transversus 

 atlantis 



Corpus vertebrae cervicalis IV 



Corpus vertebrae 



cervicalis VII 



Corpus vertebrae thoracalis III 



M. longus capitis (0. T. rectus capitis anticus major) (see also Figs. 300, 301, 304). Form: 

 flat, oblong-triangular. Position : just in front of the upper end of the cervical spine and in front 

 of the merabrana atlantooccipitalis anterior. Origin: tubercula anteriora of the transverse processes 

 of the 3rd 6th cervical vertebra. Insertion: upward and medianward to the pars basilaris oss. 

 occipitalis. Action: bends the head forward. Innervation: direct branch of the plexus cervicalis. 



M. longiis colli (see also Fig. 304). Form: flat, oblong -triangular, broadest in the 

 middle. P osition: close to the anterior surface of the cervical spine, in the groove between the 

 bodies and transverse processes of the vertebrae ; it is partially covered above by the m. longus 

 capitis. Two portions. Inferior, medial: from the bodies of the 3rd thoracic to the 5th cervical 

 vertebra, goes to the bodies of the 5tii 2iid cervical vertebra and to the anterior tubercles of 

 the transverse processes of the 6*^ and 5th cervical vertebra; superior, lateral portion : from the 

 anterior tubercles of the transverse processes of the Gth 3rd cervical vertebra, goes to the 

 tuberculum anterius atlantis. Action: bends the cervical spine forward and lateralward. 

 Innervation: direct branches of the cervical and brachial plexuses. 



