184 MYOLOGY. 



the aponeurosis of the panniculus, and infero-laterally becomes 

 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 to 

 one side, or with its fellow in depressing them. 



TRAPEZIUS CERVICALIS. 

 {Cervico-acromialis.) 

 (Pl. II. 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 nuchse. 

 Insertion. — With the dorsal trapezius to the spine of the 

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



Relation. — Externally with fascia from the levator humeri and 

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

 boideus longus, pectoralis parvus, and an tea spinatus. 

 Action. — It elevates and draws the shoulder forwards. 



EHOMBOIDEUS LONGUS. 



( Cer vico-sitbsccqndaris.) 

 (Pl. IIL 9.) 



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

 the cordiform portion of the ligamentum nuchse. It appears as 

 a tapering triangle, widest posteriorly, and very fleshy in its 

 structure. 



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

 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 

 serratus 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. 



Actio7i. — To elevate and draw the scapula forwards. 



