184 MYOLOGY. 



blended with that muscle ; hence it may be said to have an 

 indirect sternal attachment. 



Action, — "When the head is fixed, it advances the entire limb; 

 if the limbs are fixed, it aids in turning the head and neck ta 

 one side, or with its fellow in depressing them. 



TRAPEZIUS CERVICALIS. 



(Cervico-acfomialis.) 



(PL. IL 13.) 



Situated supero-posteriorly, this, the cervical portion of the 

 trapezius muscle, is thin, flat, and triangular, its fibres converging 

 downwards and backwards. It is aponeurotic above, and poste- 

 riorly, where it joins the dorsal portion. 



Origin. — ^From the funicular portion of the ligamentum nuchas. 



Insertion.— Wi\h the dorsal trapezius to the spine of the 

 scapula, at its tubercle, and to the scapular fascia. 



Relation. — Externally with fascia from the levator humeri and 

 panniculus ; internally with the splenius, serratus magnus, rhom- 

 boideus longus, pectoralis parvus, and antea spinatus. 



Action. — It elevates, and draws the shoulder forwards. 



RHOMBOIDEUS LONGUS. 



(Cervico-subscapulcms.) 

 (PL.IIL9.) 



It is placed on the supero-lateral part of the neck, just below 

 the cordiform portion of the ligamentum nuchas. It appears as a 

 tapering triangle, widest posteriorly, and very fleshy in its 

 structure. 



Origin. — From the funicular portion of the ligamentum nuchas, 

 as high as the second cervical vertebra. 



Insertion. — To the inner surface of the anterior angle of the 

 scapula, and to its cartilage of prolongation, just above the 

 serratuB magnus. 



Relation. — Externally with the cervical trapezius ; inferiorly 

 with the splenius ; posteriorly with the rhomboideus brevis, with 

 which it blends ; internally with the ligamentum nuchse. 



Action. — To elevate and draw the scapula forwards. 



