296 



Muscles of the Back 



Linea nuchae inferior 

 Liiiea nncliae superior 



Protnbevaiitia occipitalis externa 



Foramen 



niastoi- 



deuui 



Processus 

 luastoideus 



Processus transversus 

 atlautis 



A. vertebralis 



Tiibereulum posterius atlantis 



" ' .M.'obliquus capitis 

 superior, 

 ""-^, M. rectus capitis 

 postcrfor niiEor 

 M. rectus capitis 

 posterior major 



M. obliquus capitis inferior 



JM. intertransYersarius posterior 



Processus spinosus epistrophei 



- M. iutersjiiuiilis 



Processus spinosus verteijrae cerviealis III 



341. Short muscles of the neck, viewed from behind and below. 



M. rectus capitis posterior major (0. T. rectus capitis posticus major). Form: flat, 

 oljlniio'-triiin^'ular. rusitioii: immodiati'ly upon the vertebrae. Origin: proc. spinosus 

 opistni])hei. Jnscrtion: slii^htly diverging, upward and lateralward to the inferior surface of 

 tlio squama occipitalis. Action: it draws the head backward, and rotates it toward the 

 same side. Innervation: ranms ])osterior of the n. suboccipitalis. 



31. rectus capitis posterior minor (0. T. rectus capitis posticus minor) (see also 

 ''"ig. 340). Fnrm: Hat, triangular. I'osition: immediattdy upon the membrana atlantooccipitalis 

 isti'riiir, rcacliiug as far as the median plane; lateralward it is partially covered by the 

 .eceding muscle. Origin: tuberculum posterius atlantis. Insertion: slightly diverging, 

 ii]iward t(> the inferior surface of the squama occipitalis. Action: it draws the head back- 

 ward, lunervatidu: raiuus posterior of the n. suhoccipitahs. 



31. (l)li<|uus capitis superior. Form: flat, oblong-triangular. Position: lateralward 

 and bacivward from the articulatio atlantooccipitalis. Origin: ])roc. transversus atlantis. In- 

 sertion : slightly diverging, obliquely upward and medianward to the inferior surface t)f the squama 

 nccipitidis. A r t i 1.11 : it draws tlir lic;id l):ickward. Inner v. : ramus posteriori if then. su1)occipitalis. 



31. obliquus capitis inferior. Form: flat, oblong. Position: immediately upon 

 the vertebrae. Origin: proc. spinosus epistrophei. Insertion: lateralward and upward to 

 the proc. transversus atlantis. Action: it rotates the atlas and the head toward the samo 

 side. Innervation: ramus posterior of the n. suboccipitalis. 



