100 MUSCULAR SYSTEM. 



TR A c H E LO- M ASTo 1 D K u s . — Dorso-fnastuicleus. 



Situation. — Deep-seated : underneath the vertebral attach- 

 ments of the splenitis. 



Figure. — Long; cyhndroid ; bifid. 



Attachments. — Posteriorly, to the transverse processes of the 

 two foremost vertebrae of the back ; to the oblique processes of 

 the six hindermost cervical : anteriorly, in union with the tendon 

 of the splenius, into the mastoid process of the temporal bone. 



Relations. — Externally, with the splenius ; internally, with 

 the spinalis colli ; posteriorly, it is included between the spinalis 

 and longissinuis dorsi ; anteriorly, it is inseparably united with 

 the splenius. 



Direction. — Along the neck. 



Structure. — Tendinous, where it is attached to the back ; 

 fleshy from thence to its union with the splenius, where it ends in 

 the tendon common to it and that muscle. 



Action. — To erect the head, or to draw it on one side. 



SPINALIS COLLI. — Dorso-spiualis. 



Situation. — Deepest seated upon the side of the neck, 

 lying within the interval between the oblique and spinous pro- 

 cesses. 



Figure. — A near approach to a parallelogram. 



Attachment. — Inferiorly, to the oblique processes of all the 

 cervical vertebrte, except the first and second ; also to that of 

 the first dorsal: superiorly, to the spines of all the cervical 

 vertebrae, excepting that of the atlas. 



Relations. — On the outer side, with the complexus and tra- 

 chelo mastoideus ; on the inner, with the ligamentum colli and 

 the vertebr-cB of the neck. 



Structure. — More tendinous than fleshy at its attachments ; 

 intersected with layers of tendon elsewhere. 



Action. — To aid in the erection of the head, but more par- 

 ticularly in the constrained flexion of the neck backwards. 



3.— SUPERIOR CERVICO-OCCIPITAL RE(;iON. 



COMPLEXUS MINOR. — Axoido-occipitoHs Longus. 



Situation. — Upon the poll. 



Figure. — Long, slender, fusiform. 



Attachment. — To the spinous process of the vertebra den- 

 tata ; and at the other end inseparably united with the tendon 

 of the complexus major. 



Relations. — Superiorly, with the complexus major; inferiorly, 

 with the next muscle: on the inner side, with the ligamentum 

 colli. 



