304 



DOKSAL MUSCLES OF THE TRUNK. 



Fig. 218. 



region, and are distinguished by being more nearly horizontal than the 

 rest. Each arises from the upper and back part of the transverse pro- 

 cess, and is inserted into the vertebra next above, at tlie inferior margin 

 and on part of the surface of the lamina, as fiir as the root of the 

 spinous process, 



Jntertransveusales. — The intertransversales are short niuscies 

 passing nearly vertically from vertebra to vertebra between the trans- 

 verse processes. They are most developed in the cervical, and least in 

 the dorsal region. Beneath each cervical transverse process there are 

 two such muscles, one descending from the anterior, and another from 

 the posterior part of the process. In the lumbar region there arc like- 

 ■wise two sets : one set, the intertransversales laterates, lie between the 

 transverse proci'sses, and are in series with the levatores costarum ; the 

 other set, mtertran.n'ersales mediates or interaccessorii, pass from the 



accessory process of one vertebra 

 to the niamraillary process of 

 the next, and are in series with 

 the intertransversales of the dor- 

 sal reGfion 



Fig. 218. — YiE-vr of the Deep Pos- 

 terior Muscles of the Upper Part 

 CF THE Vertebhal Column. (A. T ) ^ 



a, posterior occipital protuberance ; b, 

 surface between the superior ami in- 

 ferior curved lines on which the com- 

 plexus is inserted ; c, spinous jirocess of 

 the axis vertebra ; <f, transvei-se pro- 

 cess of the atlas ; e, transverse process 

 of the first dorsal vertebra ; /, lamina of 

 the sixth dorsal vertebra ; 1, rectus 

 capitis posticus minor muscle ; 2, rectus 

 posticus major ; 3, obliquus supei'ior ; 

 4, obliquus inferior ; 5, rectus capitis 

 lateralis ; G, trachelo-mastoid, the mus- 

 cle of the right side turned inwards and 

 its slips of attachment to the dorsal and' 

 cervical transveree processes separated 

 from each otlier ; 7, transversalis cer- 

 vicis, the figures are placed near the 

 extreme ends of the muscle on the right 

 side ; 7', on the left side, longissimus 

 dorsi ; 8, cervicalis ascendens, the 

 muscle of the right side is spread out ; 

 8', on the left side, the seven upper 

 tendinous insertions of the ilio-costalis 

 and acccss'orius muscles ; 9, upper part 

 of the semispinalis colli of the left side ; 

 10, placed on the seventh rib of the right 

 side close to the insertion of its levator 

 costie muscle ; 11. 11, three rotatores 

 vertebrarum between the third and sixth 

 dorsal vertebra?. 



Interspinales. — The inter- 

 spinales are short vertical fasci- 

 culi of fleshy fibres, placed in pairs between the spinous processes of the 

 contiguous vertebrae. They are best marked in the neck, where they are 



