190 



tho atlas (Fig. 105, 9). c, (I. The two or three others nro directly 

 into tho transverse processes of the third, fourth, und tit'th 

 vertebrro. 



Jtrlation*. The splcnius is related, outwardly, to tho rhomlx minis, tho 

 angularis, cervical trapezius, and mnstoido huineralis ; inwardly, to tho two 

 coiiiplcxus and two oblique muscles of the head; by its inferior l>.nl. -r. to 

 the superior margin of tho inferior branch of tho ilio-spinalis (longissiniu* 

 dorei). 



Action. It extends the head and neck in inclining them to one side. If 

 the two act in concert, tho extension is direct. 



\J 



SfPKRFlCIAL MUSCLES OK T1IK NFX^K AND Sl'INAI. Kl-:<il)N OK THK. HACK AM- MHN>. 



1, Dorsal trapezius; 2, Great dorsal; .'!, <Vrviral trapezius; 4, Levator anguli 

 scapulae; 5, Splenius; <j, Anterior, or superficial portion of the mastoido-hume- 

 ralis ; 7, Its humeral insertion; 7' Its mnstoid insertion; 8, The thin aponeumMs 

 uniting this insertion to the sterno-inaxillary muscle; 8', Posterior portion of the 

 mastoido-humeralis ; 9, Its inferior aponeurosis inserted into the interstice of the 

 long abductor of the arm ; 10, Sterno-maxillari* ; 1 1, Subscapulo-hyoidens ; 1 _', 

 Portion of the dermal muscle of the neck ; 13, Portion of the great extensor of 

 the fore-arm ; 14, Posterior belly of the long abductor of the arm; 15, Great 

 pectoral muscle. 



