

MUSCLES OF THE CHEST. 



Fig. 59. 



73 



Subclavius.^ — Or. from the cartilage of the first rib. In. into 

 the inferior face of the clavicle. Use. Draws the clavicle down- 

 wards. 



Setratus magnus, or anticus.^ ^" — Or. from the nine upper ribs, 

 five of its heads interdigitating with the external oblique muscle, hi. 

 into the whole length of the base of the scapula, tfse. Draws the 

 scapula forwards. 



Intercostales externi.^^ — There are eleven on each side. Or. 

 from the transverse process of the vertebra, and the inferior sharp 

 edge of the rib. In. into the superior rounded edge of the rib below. 

 The fibres pass obliquely downwards and forwards. 



Intercostales interni. — Also eleven on each side. Or. from the 

 inferior edge of the rib, and costal cartilages. In. into the superior 

 rounded edge of the rib below, the fibres passing downwards and 

 backwards. Use. To approximate the ribs. 



Triangularis sterni. — Situated on the inner wall of the front of 



