172 



Muscles of the Back. 



226. Tlic Short Muscles of the Back. 



M. multifidus spinac (Fig. 225). Orig. : Articular and transverse pro- 

 cesses of lower vertebrae. Insert.: Spinous processes of upper vertebrae. 



MM. intcrspinaks. With the exception of the III. to the X. dorsal 

 vertebrae, these are placed between the spinous processes of contiguous 

 vertebrae. 



M^[. inter transversarii, each between two transverse processes ; at the 

 cervical and lumbar vertebrae they are double on both sides, MM. intcr- 

 transversarii antici et postici ; at tlie upper dorsal vertebrae they are not 

 present, at the lower on both sides single. 



M. rcctus cap'dls posticus major. Orig. : Spinous process of the axis. 

 Insert. : Inferior curved line of the occipital bone. (Extends the head.) 



M. rcctus capitis posticus minor. Orig. : Posterior tubercle of the atlas. 

 Insert. : Inferior curved line of the occipital bone. (Extends the head.) 



M. rcctus capitis posticus laterals. Orig. : Lateral portion of the atlas. 

 Insert. : Jugular process of the occipital bone. 



J/~. obliqmis capitis superior s. minor. Orig. : Summit of the transverse 

 process of the atlas. Insert. : Inferior curved line of the occipital bone. 

 (Extends the head.) 



M. obliguus carjitis inferior s. major. Orig. : Spinous process of the 

 axis. Insert. : Transverse process of the atlas. (Rotates the atlas and 

 with it the head.) 



