106 



OF THE MUSCLES. 



fibre endowing it with strength and endurance for that pur- 

 pose. One acting would co-operate witli tlie splenius, and 

 draw the head to one side. 



Erector capitis major (Fig 5.1). Oriyin. From tlie 

 superior spine of the dentator. Insertion. Into the posterior 

 of the occiput. Action. To toss the liead into the air ; or to 

 move tiie occiput upon the atlas. 



Erector capitis minor (Fig 5.1). Origin. From the 

 rudimental spine of the atlas. Insertion. Into the occiput, 

 immediately above the condyle ; and to the capsular liga- 

 ment. Action. To elevate the head ; and to guard the cap- 

 sular ligament. 



FIG 5. 



DEEPER-SEATED MUSCLES OF 

 THE NECK. 



1, Erectores capitis. 



Ty J Small muscles of the vertebrte. 



4, Scalenus. 



5, Sterno-thyro-hyoideiis. 

 G, Rotator capitis posterior. 



7, Rotator capitis anterior. 



8, Stylo maxillaris. 



9, Depressor capitis major. 



The substance running along the back 

 of the neck, and having waving lines 

 proceeding from it, is the liga- 

 meutum nuchse. 



Rotator capitis anterior (Fig 5.7). 



the anterior margin of the wing of the atlas 



Origin. From 

 Insertion. 

 Into the occiput ; and also into the petrous temporal bone. 

 Action. To incline the head, to a limited extent, upon one 

 side. 



Rotator capitis posterior (F/^ 5 . 6). Origin. From the 

 spine and arch of the dentata. Insertion. Into the upper 



